diff --git a/generated/src/aws-cpp-sdk-AWSMigrationHub/include/aws/AWSMigrationHub/MigrationHubClient.h b/generated/src/aws-cpp-sdk-AWSMigrationHub/include/aws/AWSMigrationHub/MigrationHubClient.h
index c99acc9f36c2..de19458085ff 100644
--- a/generated/src/aws-cpp-sdk-AWSMigrationHub/include/aws/AWSMigrationHub/MigrationHubClient.h
+++ b/generated/src/aws-cpp-sdk-AWSMigrationHub/include/aws/AWSMigrationHub/MigrationHubClient.h
@@ -748,7 +748,7 @@ class AWS_MIGRATIONHUB_API MigrationHubClient : public Aws::Client::AWSJsonClien
     return SubmitAsync(&MigrationHubClient::PutResourceAttributes, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<MigrationHubEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-accessanalyzer/include/aws/accessanalyzer/AccessAnalyzerClient.h b/generated/src/aws-cpp-sdk-accessanalyzer/include/aws/accessanalyzer/AccessAnalyzerClient.h
index 1a6bb81e74be..fd55fbdfce6e 100644
--- a/generated/src/aws-cpp-sdk-accessanalyzer/include/aws/accessanalyzer/AccessAnalyzerClient.h
+++ b/generated/src/aws-cpp-sdk-accessanalyzer/include/aws/accessanalyzer/AccessAnalyzerClient.h
@@ -1137,7 +1137,7 @@ class AWS_ACCESSANALYZER_API AccessAnalyzerClient : public Aws::Client::AWSJsonC
     return SubmitAsync(&AccessAnalyzerClient::ValidatePolicy, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<AccessAnalyzerEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-account/include/aws/account/AccountClient.h b/generated/src/aws-cpp-sdk-account/include/aws/account/AccountClient.h
index d0c2c7658e46..fdf180305620 100644
--- a/generated/src/aws-cpp-sdk-account/include/aws/account/AccountClient.h
+++ b/generated/src/aws-cpp-sdk-account/include/aws/account/AccountClient.h
@@ -527,7 +527,7 @@ class AWS_ACCOUNT_API AccountClient : public Aws::Client::AWSJsonClient, public
     return SubmitAsync(&AccountClient::StartPrimaryEmailUpdate, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<AccountEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-acm-pca/include/aws/acm-pca/ACMPCAClient.h b/generated/src/aws-cpp-sdk-acm-pca/include/aws/acm-pca/ACMPCAClient.h
index 3e683bda5e47..d3abe910c4b3 100644
--- a/generated/src/aws-cpp-sdk-acm-pca/include/aws/acm-pca/ACMPCAClient.h
+++ b/generated/src/aws-cpp-sdk-acm-pca/include/aws/acm-pca/ACMPCAClient.h
@@ -1111,7 +1111,7 @@ class AWS_ACMPCA_API ACMPCAClient : public Aws::Client::AWSJsonClient, public Aw
     return SubmitAsync(&ACMPCAClient::UpdateCertificateAuthority, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<ACMPCAEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-acm/include/aws/acm/ACMClient.h b/generated/src/aws-cpp-sdk-acm/include/aws/acm/ACMClient.h
index e27a521f32c7..8c2d0a7ceecb 100644
--- a/generated/src/aws-cpp-sdk-acm/include/aws/acm/ACMClient.h
+++ b/generated/src/aws-cpp-sdk-acm/include/aws/acm/ACMClient.h
@@ -644,7 +644,7 @@ class AWS_ACM_API ACMClient : public Aws::Client::AWSJsonClient, public Aws::Cli
     return SubmitAsync(&ACMClient::UpdateCertificateOptions, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<ACMEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-aiops/include/aws/aiops/AIOpsClient.h b/generated/src/aws-cpp-sdk-aiops/include/aws/aiops/AIOpsClient.h
index 6b9ee630f181..4a714cf27296 100644
--- a/generated/src/aws-cpp-sdk-aiops/include/aws/aiops/AIOpsClient.h
+++ b/generated/src/aws-cpp-sdk-aiops/include/aws/aiops/AIOpsClient.h
@@ -422,7 +422,7 @@ class AWS_AIOPS_API AIOpsClient : public Aws::Client::AWSJsonClient, public Aws:
     return SubmitAsync(&AIOpsClient::UpdateInvestigationGroup, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<AIOpsEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-amp/include/aws/amp/PrometheusServiceClient.h b/generated/src/aws-cpp-sdk-amp/include/aws/amp/PrometheusServiceClient.h
index 51640bb7b62a..5c3ed7cca053 100644
--- a/generated/src/aws-cpp-sdk-amp/include/aws/amp/PrometheusServiceClient.h
+++ b/generated/src/aws-cpp-sdk-amp/include/aws/amp/PrometheusServiceClient.h
@@ -1422,7 +1422,7 @@ class AWS_PROMETHEUSSERVICE_API PrometheusServiceClient : public Aws::Client::AW
     return SubmitAsync(&PrometheusServiceClient::UpdateWorkspaceConfiguration, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<PrometheusServiceEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-amplify/include/aws/amplify/AmplifyClient.h b/generated/src/aws-cpp-sdk-amplify/include/aws/amplify/AmplifyClient.h
index 4d01c5289ba7..7ff6bcb49ca6 100644
--- a/generated/src/aws-cpp-sdk-amplify/include/aws/amplify/AmplifyClient.h
+++ b/generated/src/aws-cpp-sdk-amplify/include/aws/amplify/AmplifyClient.h
@@ -1071,7 +1071,7 @@ class AWS_AMPLIFY_API AmplifyClient : public Aws::Client::AWSJsonClient, public
     return SubmitAsync(&AmplifyClient::UpdateWebhook, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<AmplifyEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-amplifybackend/include/aws/amplifybackend/AmplifyBackendClient.h b/generated/src/aws-cpp-sdk-amplifybackend/include/aws/amplifybackend/AmplifyBackendClient.h
index 644a011b250c..11afe7343ae6 100644
--- a/generated/src/aws-cpp-sdk-amplifybackend/include/aws/amplifybackend/AmplifyBackendClient.h
+++ b/generated/src/aws-cpp-sdk-amplifybackend/include/aws/amplifybackend/AmplifyBackendClient.h
@@ -886,7 +886,7 @@ class AWS_AMPLIFYBACKEND_API AmplifyBackendClient : public Aws::Client::AWSJsonC
     return SubmitAsync(&AmplifyBackendClient::UpdateBackendStorage, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<AmplifyBackendEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-amplifyuibuilder/include/aws/amplifyuibuilder/AmplifyUIBuilderClient.h b/generated/src/aws-cpp-sdk-amplifyuibuilder/include/aws/amplifyuibuilder/AmplifyUIBuilderClient.h
index c07ee2b0d907..8befcb1e275c 100644
--- a/generated/src/aws-cpp-sdk-amplifyuibuilder/include/aws/amplifyuibuilder/AmplifyUIBuilderClient.h
+++ b/generated/src/aws-cpp-sdk-amplifyuibuilder/include/aws/amplifyuibuilder/AmplifyUIBuilderClient.h
@@ -807,7 +807,7 @@ class AWS_AMPLIFYUIBUILDER_API AmplifyUIBuilderClient : public Aws::Client::AWSJ
     return SubmitAsync(&AmplifyUIBuilderClient::UpdateTheme, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<AmplifyUIBuilderEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-apigateway/include/aws/apigateway/APIGatewayClient.h b/generated/src/aws-cpp-sdk-apigateway/include/aws/apigateway/APIGatewayClient.h
index a30a65489f98..d9c9220508da 100644
--- a/generated/src/aws-cpp-sdk-apigateway/include/aws/apigateway/APIGatewayClient.h
+++ b/generated/src/aws-cpp-sdk-apigateway/include/aws/apigateway/APIGatewayClient.h
@@ -3365,7 +3365,7 @@ class AWS_APIGATEWAY_API APIGatewayClient : public Aws::Client::AWSJsonClient,
     return SubmitAsync(&APIGatewayClient::UpdateVpcLink, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<APIGatewayEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-apigatewaymanagementapi/include/aws/apigatewaymanagementapi/ApiGatewayManagementApiClient.h b/generated/src/aws-cpp-sdk-apigatewaymanagementapi/include/aws/apigatewaymanagementapi/ApiGatewayManagementApiClient.h
index 0656747ed534..58d4c817b0c3 100644
--- a/generated/src/aws-cpp-sdk-apigatewaymanagementapi/include/aws/apigatewaymanagementapi/ApiGatewayManagementApiClient.h
+++ b/generated/src/aws-cpp-sdk-apigatewaymanagementapi/include/aws/apigatewaymanagementapi/ApiGatewayManagementApiClient.h
@@ -160,7 +160,7 @@ class AWS_APIGATEWAYMANAGEMENTAPI_API ApiGatewayManagementApiClient
     return SubmitAsync(&ApiGatewayManagementApiClient::PostToConnection, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<ApiGatewayManagementApiEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-apigatewayv2/include/aws/apigatewayv2/ApiGatewayV2Client.h b/generated/src/aws-cpp-sdk-apigatewayv2/include/aws/apigatewayv2/ApiGatewayV2Client.h
index 1f1a8268961c..723c5b12b58a 100644
--- a/generated/src/aws-cpp-sdk-apigatewayv2/include/aws/apigatewayv2/ApiGatewayV2Client.h
+++ b/generated/src/aws-cpp-sdk-apigatewayv2/include/aws/apigatewayv2/ApiGatewayV2Client.h
@@ -2749,7 +2749,7 @@ class AWS_APIGATEWAYV2_API ApiGatewayV2Client : public Aws::Client::AWSJsonClien
     return SubmitAsync(&ApiGatewayV2Client::UpdateVpcLink, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<ApiGatewayV2EndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-appconfig/include/aws/appconfig/AppConfigClient.h b/generated/src/aws-cpp-sdk-appconfig/include/aws/appconfig/AppConfigClient.h
index a960a008631e..351ed7e1f80b 100644
--- a/generated/src/aws-cpp-sdk-appconfig/include/aws/appconfig/AppConfigClient.h
+++ b/generated/src/aws-cpp-sdk-appconfig/include/aws/appconfig/AppConfigClient.h
@@ -1462,7 +1462,7 @@ class AWS_APPCONFIG_API AppConfigClient : public Aws::Client::AWSJsonClient,
     return SubmitAsync(&AppConfigClient::ValidateConfiguration, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<AppConfigEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-appconfigdata/include/aws/appconfigdata/AppConfigDataClient.h b/generated/src/aws-cpp-sdk-appconfigdata/include/aws/appconfigdata/AppConfigDataClient.h
index 653276486ee4..52f1efcdb1c0 100644
--- a/generated/src/aws-cpp-sdk-appconfigdata/include/aws/appconfigdata/AppConfigDataClient.h
+++ b/generated/src/aws-cpp-sdk-appconfigdata/include/aws/appconfigdata/AppConfigDataClient.h
@@ -188,7 +188,7 @@ class AWS_APPCONFIGDATA_API AppConfigDataClient : public Aws::Client::AWSJsonCli
     return SubmitAsync(&AppConfigDataClient::StartConfigurationSession, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<AppConfigDataEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-appfabric/include/aws/appfabric/AppFabricClient.h b/generated/src/aws-cpp-sdk-appfabric/include/aws/appfabric/AppFabricClient.h
index 1f059c4d1d2a..d1f65fd33e40 100644
--- a/generated/src/aws-cpp-sdk-appfabric/include/aws/appfabric/AppFabricClient.h
+++ b/generated/src/aws-cpp-sdk-appfabric/include/aws/appfabric/AppFabricClient.h
@@ -796,7 +796,7 @@ class AWS_APPFABRIC_API AppFabricClient : public Aws::Client::AWSJsonClient,
     return SubmitAsync(&AppFabricClient::UpdateIngestionDestination, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<AppFabricEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-appflow/include/aws/appflow/AppflowClient.h b/generated/src/aws-cpp-sdk-appflow/include/aws/appflow/AppflowClient.h
index df13cb459f28..05dfb3cbe755 100644
--- a/generated/src/aws-cpp-sdk-appflow/include/aws/appflow/AppflowClient.h
+++ b/generated/src/aws-cpp-sdk-appflow/include/aws/appflow/AppflowClient.h
@@ -831,7 +831,7 @@ class AWS_APPFLOW_API AppflowClient : public Aws::Client::AWSJsonClient, public
     return SubmitAsync(&AppflowClient::UpdateFlow, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<AppflowEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-appintegrations/include/aws/appintegrations/AppIntegrationsServiceClient.h b/generated/src/aws-cpp-sdk-appintegrations/include/aws/appintegrations/AppIntegrationsServiceClient.h
index f2d852b90f18..212c87e816cb 100644
--- a/generated/src/aws-cpp-sdk-appintegrations/include/aws/appintegrations/AppIntegrationsServiceClient.h
+++ b/generated/src/aws-cpp-sdk-appintegrations/include/aws/appintegrations/AppIntegrationsServiceClient.h
@@ -752,7 +752,7 @@ class AWS_APPINTEGRATIONSSERVICE_API AppIntegrationsServiceClient
     return SubmitAsync(&AppIntegrationsServiceClient::UpdateEventIntegration, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<AppIntegrationsServiceEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-application-autoscaling/include/aws/application-autoscaling/ApplicationAutoScalingClient.h b/generated/src/aws-cpp-sdk-application-autoscaling/include/aws/application-autoscaling/ApplicationAutoScalingClient.h
index 57f16a571585..3f4fa14a529f 100644
--- a/generated/src/aws-cpp-sdk-application-autoscaling/include/aws/application-autoscaling/ApplicationAutoScalingClient.h
+++ b/generated/src/aws-cpp-sdk-application-autoscaling/include/aws/application-autoscaling/ApplicationAutoScalingClient.h
@@ -629,7 +629,7 @@ class AWS_APPLICATIONAUTOSCALING_API ApplicationAutoScalingClient
     return SubmitAsync(&ApplicationAutoScalingClient::UntagResource, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<ApplicationAutoScalingEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-application-insights/include/aws/application-insights/ApplicationInsightsClient.h b/generated/src/aws-cpp-sdk-application-insights/include/aws/application-insights/ApplicationInsightsClient.h
index b77e0b0c592b..a02e77ce01ad 100644
--- a/generated/src/aws-cpp-sdk-application-insights/include/aws/application-insights/ApplicationInsightsClient.h
+++ b/generated/src/aws-cpp-sdk-application-insights/include/aws/application-insights/ApplicationInsightsClient.h
@@ -995,7 +995,7 @@ class AWS_APPLICATIONINSIGHTS_API ApplicationInsightsClient
     return SubmitAsync(&ApplicationInsightsClient::UpdateWorkload, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<ApplicationInsightsEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-application-signals/include/aws/application-signals/ApplicationSignalsClient.h b/generated/src/aws-cpp-sdk-application-signals/include/aws/application-signals/ApplicationSignalsClient.h
index bee026058221..68a48d3f5ab5 100644
--- a/generated/src/aws-cpp-sdk-application-signals/include/aws/application-signals/ApplicationSignalsClient.h
+++ b/generated/src/aws-cpp-sdk-application-signals/include/aws/application-signals/ApplicationSignalsClient.h
@@ -851,7 +851,7 @@ class AWS_APPLICATIONSIGNALS_API ApplicationSignalsClient : public Aws::Client::
     return SubmitAsync(&ApplicationSignalsClient::UpdateServiceLevelObjective, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<ApplicationSignalsEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-applicationcostprofiler/include/aws/applicationcostprofiler/ApplicationCostProfilerClient.h b/generated/src/aws-cpp-sdk-applicationcostprofiler/include/aws/applicationcostprofiler/ApplicationCostProfilerClient.h
index 0da24d52f2c8..99a6146f1234 100644
--- a/generated/src/aws-cpp-sdk-applicationcostprofiler/include/aws/applicationcostprofiler/ApplicationCostProfilerClient.h
+++ b/generated/src/aws-cpp-sdk-applicationcostprofiler/include/aws/applicationcostprofiler/ApplicationCostProfilerClient.h
@@ -252,7 +252,7 @@ class AWS_APPLICATIONCOSTPROFILER_API ApplicationCostProfilerClient
     return SubmitAsync(&ApplicationCostProfilerClient::UpdateReportDefinition, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<ApplicationCostProfilerEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-appmesh/include/aws/appmesh/AppMeshClient.h b/generated/src/aws-cpp-sdk-appmesh/include/aws/appmesh/AppMeshClient.h
index 36dc7a04acd4..e8a8cafaa699 100644
--- a/generated/src/aws-cpp-sdk-appmesh/include/aws/appmesh/AppMeshClient.h
+++ b/generated/src/aws-cpp-sdk-appmesh/include/aws/appmesh/AppMeshClient.h
@@ -1149,7 +1149,7 @@ class AWS_APPMESH_API AppMeshClient : public Aws::Client::AWSJsonClient, public
     return SubmitAsync(&AppMeshClient::UpdateVirtualService, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<AppMeshEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-apprunner/include/aws/apprunner/AppRunnerClient.h b/generated/src/aws-cpp-sdk-apprunner/include/aws/apprunner/AppRunnerClient.h
index 26547778f00e..e27fedf17de1 100644
--- a/generated/src/aws-cpp-sdk-apprunner/include/aws/apprunner/AppRunnerClient.h
+++ b/generated/src/aws-cpp-sdk-apprunner/include/aws/apprunner/AppRunnerClient.h
@@ -1220,7 +1220,7 @@ class AWS_APPRUNNER_API AppRunnerClient : public Aws::Client::AWSJsonClient,
     return SubmitAsync(&AppRunnerClient::UpdateVpcIngressConnection, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<AppRunnerEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-appstream/include/aws/appstream/AppStreamClient.h b/generated/src/aws-cpp-sdk-appstream/include/aws/appstream/AppStreamClient.h
index cac65ef2fe37..5a29b990c6c7 100644
--- a/generated/src/aws-cpp-sdk-appstream/include/aws/appstream/AppStreamClient.h
+++ b/generated/src/aws-cpp-sdk-appstream/include/aws/appstream/AppStreamClient.h
@@ -2592,7 +2592,7 @@ class AWS_APPSTREAM_API AppStreamClient : public Aws::Client::AWSJsonClient,
     return SubmitAsync(&AppStreamClient::UpdateThemeForStack, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<AppStreamEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-appsync/include/aws/appsync/AppSyncClient.h b/generated/src/aws-cpp-sdk-appsync/include/aws/appsync/AppSyncClient.h
index afd39586bdfe..f4e0e9c69c31 100644
--- a/generated/src/aws-cpp-sdk-appsync/include/aws/appsync/AppSyncClient.h
+++ b/generated/src/aws-cpp-sdk-appsync/include/aws/appsync/AppSyncClient.h
@@ -2072,7 +2072,7 @@ class AWS_APPSYNC_API AppSyncClient : public Aws::Client::AWSJsonClient, public
     return SubmitAsync(&AppSyncClient::UpdateType, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<AppSyncEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-arc-region-switch/include/aws/arc-region-switch/ARCRegionswitchClient.h b/generated/src/aws-cpp-sdk-arc-region-switch/include/aws/arc-region-switch/ARCRegionswitchClient.h
index b19dfe021f19..4d7600fe0c43 100644
--- a/generated/src/aws-cpp-sdk-arc-region-switch/include/aws/arc-region-switch/ARCRegionswitchClient.h
+++ b/generated/src/aws-cpp-sdk-arc-region-switch/include/aws/arc-region-switch/ARCRegionswitchClient.h
@@ -674,7 +674,7 @@ class AWS_ARCREGIONSWITCH_API ARCRegionswitchClient : public Aws::Client::AWSJso
     return SubmitAsync(&ARCRegionswitchClient::UpdatePlanExecutionStep, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<ARCRegionswitchEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-arc-zonal-shift/include/aws/arc-zonal-shift/ARCZonalShiftClient.h b/generated/src/aws-cpp-sdk-arc-zonal-shift/include/aws/arc-zonal-shift/ARCZonalShiftClient.h
index 05d6eae42cab..a41ee024c95c 100644
--- a/generated/src/aws-cpp-sdk-arc-zonal-shift/include/aws/arc-zonal-shift/ARCZonalShiftClient.h
+++ b/generated/src/aws-cpp-sdk-arc-zonal-shift/include/aws/arc-zonal-shift/ARCZonalShiftClient.h
@@ -597,7 +597,7 @@ class AWS_ARCZONALSHIFT_API ARCZonalShiftClient : public Aws::Client::AWSJsonCli
     return SubmitAsync(&ARCZonalShiftClient::UpdateZonalShift, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<ARCZonalShiftEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-artifact/include/aws/artifact/ArtifactClient.h b/generated/src/aws-cpp-sdk-artifact/include/aws/artifact/ArtifactClient.h
index 87f337c75331..f724b3812355 100644
--- a/generated/src/aws-cpp-sdk-artifact/include/aws/artifact/ArtifactClient.h
+++ b/generated/src/aws-cpp-sdk-artifact/include/aws/artifact/ArtifactClient.h
@@ -285,7 +285,7 @@ class AWS_ARTIFACT_API ArtifactClient : public Aws::Client::AWSJsonClient,
     return SubmitAsync(&ArtifactClient::PutAccountSettings, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<ArtifactEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-athena/include/aws/athena/AthenaClient.h b/generated/src/aws-cpp-sdk-athena/include/aws/athena/AthenaClient.h
index d1f305a2ec51..43290dbf1408 100644
--- a/generated/src/aws-cpp-sdk-athena/include/aws/athena/AthenaClient.h
+++ b/generated/src/aws-cpp-sdk-athena/include/aws/athena/AthenaClient.h
@@ -2106,7 +2106,7 @@ class AWS_ATHENA_API AthenaClient : public Aws::Client::AWSJsonClient, public Aw
     return SubmitAsync(&AthenaClient::UpdateWorkGroup, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<AthenaEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-auditmanager/include/aws/auditmanager/AuditManagerClient.h b/generated/src/aws-cpp-sdk-auditmanager/include/aws/auditmanager/AuditManagerClient.h
index 8a6480252840..5f96dd850a65 100644
--- a/generated/src/aws-cpp-sdk-auditmanager/include/aws/auditmanager/AuditManagerClient.h
+++ b/generated/src/aws-cpp-sdk-auditmanager/include/aws/auditmanager/AuditManagerClient.h
@@ -2014,7 +2014,7 @@ class AWS_AUDITMANAGER_API AuditManagerClient : public Aws::Client::AWSJsonClien
     return SubmitAsync(&AuditManagerClient::ValidateAssessmentReportIntegrity, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<AuditManagerEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-autoscaling-plans/include/aws/autoscaling-plans/AutoScalingPlansClient.h b/generated/src/aws-cpp-sdk-autoscaling-plans/include/aws/autoscaling-plans/AutoScalingPlansClient.h
index 5ac066b06a91..5d221647596b 100644
--- a/generated/src/aws-cpp-sdk-autoscaling-plans/include/aws/autoscaling-plans/AutoScalingPlansClient.h
+++ b/generated/src/aws-cpp-sdk-autoscaling-plans/include/aws/autoscaling-plans/AutoScalingPlansClient.h
@@ -262,7 +262,7 @@ class AWS_AUTOSCALINGPLANS_API AutoScalingPlansClient : public Aws::Client::AWSJ
     return SubmitAsync(&AutoScalingPlansClient::UpdateScalingPlan, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<AutoScalingPlansEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-autoscaling/include/aws/autoscaling/AutoScalingClient.h b/generated/src/aws-cpp-sdk-autoscaling/include/aws/autoscaling/AutoScalingClient.h
index 18f278d18e03..c31cf9d66a63 100644
--- a/generated/src/aws-cpp-sdk-autoscaling/include/aws/autoscaling/AutoScalingClient.h
+++ b/generated/src/aws-cpp-sdk-autoscaling/include/aws/autoscaling/AutoScalingClient.h
@@ -2525,7 +2525,7 @@ class AWS_AUTOSCALING_API AutoScalingClient : public Aws::Client::AWSXMLClient,
     return SubmitAsync(&AutoScalingClient::UpdateAutoScalingGroup, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<AutoScalingEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-awstransfer/include/aws/awstransfer/TransferClient.h b/generated/src/aws-cpp-sdk-awstransfer/include/aws/awstransfer/TransferClient.h
index 43aa866872e4..c9ea604ebbf1 100644
--- a/generated/src/aws-cpp-sdk-awstransfer/include/aws/awstransfer/TransferClient.h
+++ b/generated/src/aws-cpp-sdk-awstransfer/include/aws/awstransfer/TransferClient.h
@@ -2190,7 +2190,7 @@ class AWS_TRANSFER_API TransferClient : public Aws::Client::AWSJsonClient,
     return SubmitAsync(&TransferClient::UpdateWebAppCustomization, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<TransferEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-b2bi/include/aws/b2bi/B2BIClient.h b/generated/src/aws-cpp-sdk-b2bi/include/aws/b2bi/B2BIClient.h
index ca5c82d5c91c..28603616f7e5 100644
--- a/generated/src/aws-cpp-sdk-b2bi/include/aws/b2bi/B2BIClient.h
+++ b/generated/src/aws-cpp-sdk-b2bi/include/aws/b2bi/B2BIClient.h
@@ -970,7 +970,7 @@ class AWS_B2BI_API B2BIClient : public Aws::Client::AWSJsonClient, public Aws::C
     return SubmitAsync(&B2BIClient::UpdateTransformer, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<B2BIEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-backup-gateway/include/aws/backup-gateway/BackupGatewayClient.h b/generated/src/aws-cpp-sdk-backup-gateway/include/aws/backup-gateway/BackupGatewayClient.h
index 8ae79420053b..b85291ac3b0f 100644
--- a/generated/src/aws-cpp-sdk-backup-gateway/include/aws/backup-gateway/BackupGatewayClient.h
+++ b/generated/src/aws-cpp-sdk-backup-gateway/include/aws/backup-gateway/BackupGatewayClient.h
@@ -794,7 +794,7 @@ class AWS_BACKUPGATEWAY_API BackupGatewayClient : public Aws::Client::AWSJsonCli
     return SubmitAsync(&BackupGatewayClient::UpdateHypervisor, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<BackupGatewayEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-backup/include/aws/backup/BackupClient.h b/generated/src/aws-cpp-sdk-backup/include/aws/backup/BackupClient.h
index 33ae6fe7e895..de83a93bca8a 100644
--- a/generated/src/aws-cpp-sdk-backup/include/aws/backup/BackupClient.h
+++ b/generated/src/aws-cpp-sdk-backup/include/aws/backup/BackupClient.h
@@ -3266,7 +3266,7 @@ class AWS_BACKUP_API BackupClient : public Aws::Client::AWSJsonClient, public Aw
     return SubmitAsync(&BackupClient::UpdateTieringConfiguration, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<BackupEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-backupsearch/include/aws/backupsearch/BackupSearchClient.h b/generated/src/aws-cpp-sdk-backupsearch/include/aws/backupsearch/BackupSearchClient.h
index ed7549de0f9a..a1ead5043bae 100644
--- a/generated/src/aws-cpp-sdk-backupsearch/include/aws/backupsearch/BackupSearchClient.h
+++ b/generated/src/aws-cpp-sdk-backupsearch/include/aws/backupsearch/BackupSearchClient.h
@@ -417,7 +417,7 @@ class AWS_BACKUPSEARCH_API BackupSearchClient : public Aws::Client::AWSJsonClien
     return SubmitAsync(&BackupSearchClient::UntagResource, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<BackupSearchEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-batch/include/aws/batch/BatchClient.h b/generated/src/aws-cpp-sdk-batch/include/aws/batch/BatchClient.h
index f281a64076a9..f79a0695b918 100644
--- a/generated/src/aws-cpp-sdk-batch/include/aws/batch/BatchClient.h
+++ b/generated/src/aws-cpp-sdk-batch/include/aws/batch/BatchClient.h
@@ -1235,7 +1235,7 @@ class AWS_BATCH_API BatchClient : public Aws::Client::AWSJsonClient, public Aws:
     return SubmitAsync(&BatchClient::UpdateServiceEnvironment, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<BatchEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-bcm-dashboards/include/aws/bcm-dashboards/BCMDashboardsClient.h b/generated/src/aws-cpp-sdk-bcm-dashboards/include/aws/bcm-dashboards/BCMDashboardsClient.h
index 09de7da7e620..d0641b23b652 100644
--- a/generated/src/aws-cpp-sdk-bcm-dashboards/include/aws/bcm-dashboards/BCMDashboardsClient.h
+++ b/generated/src/aws-cpp-sdk-bcm-dashboards/include/aws/bcm-dashboards/BCMDashboardsClient.h
@@ -322,7 +322,7 @@ class AWS_BCMDASHBOARDS_API BCMDashboardsClient : public Aws::Client::AWSJsonCli
     return SubmitAsync(&BCMDashboardsClient::UpdateDashboard, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<BCMDashboardsEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-bcm-data-exports/include/aws/bcm-data-exports/BCMDataExportsClient.h b/generated/src/aws-cpp-sdk-bcm-data-exports/include/aws/bcm-data-exports/BCMDataExportsClient.h
index 9bf1ed41d89a..01ccae8e269e 100644
--- a/generated/src/aws-cpp-sdk-bcm-data-exports/include/aws/bcm-data-exports/BCMDataExportsClient.h
+++ b/generated/src/aws-cpp-sdk-bcm-data-exports/include/aws/bcm-data-exports/BCMDataExportsClient.h
@@ -411,7 +411,7 @@ class AWS_BCMDATAEXPORTS_API BCMDataExportsClient : public Aws::Client::AWSJsonC
     return SubmitAsync(&BCMDataExportsClient::UpdateExport, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<BCMDataExportsEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-bcm-pricing-calculator/include/aws/bcm-pricing-calculator/BCMPricingCalculatorClient.h b/generated/src/aws-cpp-sdk-bcm-pricing-calculator/include/aws/bcm-pricing-calculator/BCMPricingCalculatorClient.h
index 48e0750ce94f..f0f5710ceb94 100644
--- a/generated/src/aws-cpp-sdk-bcm-pricing-calculator/include/aws/bcm-pricing-calculator/BCMPricingCalculatorClient.h
+++ b/generated/src/aws-cpp-sdk-bcm-pricing-calculator/include/aws/bcm-pricing-calculator/BCMPricingCalculatorClient.h
@@ -1164,7 +1164,7 @@ class AWS_BCMPRICINGCALCULATOR_API BCMPricingCalculatorClient
     return SubmitAsync(&BCMPricingCalculatorClient::UpdateWorkloadEstimate, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<BCMPricingCalculatorEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-bcm-recommended-actions/include/aws/bcm-recommended-actions/BCMRecommendedActionsClient.h b/generated/src/aws-cpp-sdk-bcm-recommended-actions/include/aws/bcm-recommended-actions/BCMRecommendedActionsClient.h
index 74195d99b275..5d72b6ced3ad 100644
--- a/generated/src/aws-cpp-sdk-bcm-recommended-actions/include/aws/bcm-recommended-actions/BCMRecommendedActionsClient.h
+++ b/generated/src/aws-cpp-sdk-bcm-recommended-actions/include/aws/bcm-recommended-actions/BCMRecommendedActionsClient.h
@@ -108,7 +108,7 @@ class AWS_BCMRECOMMENDEDACTIONS_API BCMRecommendedActionsClient
     return SubmitAsync(&BCMRecommendedActionsClient::ListRecommendedActions, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<BCMRecommendedActionsEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-bedrock-agent-runtime/include/aws/bedrock-agent-runtime/BedrockAgentRuntimeClient.h b/generated/src/aws-cpp-sdk-bedrock-agent-runtime/include/aws/bedrock-agent-runtime/BedrockAgentRuntimeClient.h
index 5dcebe0e0dbd..dba50765c1c7 100644
--- a/generated/src/aws-cpp-sdk-bedrock-agent-runtime/include/aws/bedrock-agent-runtime/BedrockAgentRuntimeClient.h
+++ b/generated/src/aws-cpp-sdk-bedrock-agent-runtime/include/aws/bedrock-agent-runtime/BedrockAgentRuntimeClient.h
@@ -1060,7 +1060,7 @@ class AWS_BEDROCKAGENTRUNTIME_API BedrockAgentRuntimeClient
     return SubmitAsync(&BedrockAgentRuntimeClient::UpdateSession, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<BedrockAgentRuntimeEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-bedrock-agent/include/aws/bedrock-agent/BedrockAgentClient.h b/generated/src/aws-cpp-sdk-bedrock-agent/include/aws/bedrock-agent/BedrockAgentClient.h
index c36a09999dc7..aec0e390b255 100644
--- a/generated/src/aws-cpp-sdk-bedrock-agent/include/aws/bedrock-agent/BedrockAgentClient.h
+++ b/generated/src/aws-cpp-sdk-bedrock-agent/include/aws/bedrock-agent/BedrockAgentClient.h
@@ -2178,7 +2178,7 @@ class AWS_BEDROCKAGENT_API BedrockAgentClient
     return SubmitAsync(&BedrockAgentClient::ValidateFlowDefinition, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<BedrockAgentEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-bedrock-agentcore-control/include/aws/bedrock-agentcore-control/BedrockAgentCoreControlClient.h b/generated/src/aws-cpp-sdk-bedrock-agentcore-control/include/aws/bedrock-agentcore-control/BedrockAgentCoreControlClient.h
index 7d0f4e2a0995..b00792adb858 100644
--- a/generated/src/aws-cpp-sdk-bedrock-agentcore-control/include/aws/bedrock-agentcore-control/BedrockAgentCoreControlClient.h
+++ b/generated/src/aws-cpp-sdk-bedrock-agentcore-control/include/aws/bedrock-agentcore-control/BedrockAgentCoreControlClient.h
@@ -2385,7 +2385,7 @@ class AWS_BEDROCKAGENTCORECONTROL_API BedrockAgentCoreControlClient
     return SubmitAsync(&BedrockAgentCoreControlClient::UpdateWorkloadIdentity, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<BedrockAgentCoreControlEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-bedrock-agentcore/include/aws/bedrock-agentcore/BedrockAgentCoreClient.h b/generated/src/aws-cpp-sdk-bedrock-agentcore/include/aws/bedrock-agentcore/BedrockAgentCoreClient.h
index 87b63bc9f500..65551026d97d 100644
--- a/generated/src/aws-cpp-sdk-bedrock-agentcore/include/aws/bedrock-agentcore/BedrockAgentCoreClient.h
+++ b/generated/src/aws-cpp-sdk-bedrock-agentcore/include/aws/bedrock-agentcore/BedrockAgentCoreClient.h
@@ -1191,7 +1191,7 @@ class AWS_BEDROCKAGENTCORE_API BedrockAgentCoreClient : public Aws::Client::AWSJ
     return SubmitAsync(&BedrockAgentCoreClient::UpdateBrowserStream, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<BedrockAgentCoreEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-bedrock-data-automation-runtime/include/aws/bedrock-data-automation-runtime/BedrockDataAutomationRuntimeClient.h b/generated/src/aws-cpp-sdk-bedrock-data-automation-runtime/include/aws/bedrock-data-automation-runtime/BedrockDataAutomationRuntimeClient.h
index eded450b7ed4..8bb79b6a4556 100644
--- a/generated/src/aws-cpp-sdk-bedrock-data-automation-runtime/include/aws/bedrock-data-automation-runtime/BedrockDataAutomationRuntimeClient.h
+++ b/generated/src/aws-cpp-sdk-bedrock-data-automation-runtime/include/aws/bedrock-data-automation-runtime/BedrockDataAutomationRuntimeClient.h
@@ -247,7 +247,7 @@ class AWS_BEDROCKDATAAUTOMATIONRUNTIME_API BedrockDataAutomationRuntimeClient
     return SubmitAsync(&BedrockDataAutomationRuntimeClient::UntagResource, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<BedrockDataAutomationRuntimeEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-bedrock-data-automation/include/aws/bedrock-data-automation/BedrockDataAutomationClient.h b/generated/src/aws-cpp-sdk-bedrock-data-automation/include/aws/bedrock-data-automation/BedrockDataAutomationClient.h
index 8b5f1e86c421..d9899e2708d6 100644
--- a/generated/src/aws-cpp-sdk-bedrock-data-automation/include/aws/bedrock-data-automation/BedrockDataAutomationClient.h
+++ b/generated/src/aws-cpp-sdk-bedrock-data-automation/include/aws/bedrock-data-automation/BedrockDataAutomationClient.h
@@ -553,7 +553,7 @@ class AWS_BEDROCKDATAAUTOMATION_API BedrockDataAutomationClient
     return SubmitAsync(&BedrockDataAutomationClient::UpdateDataAutomationProject, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<BedrockDataAutomationEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-bedrock-runtime/include/aws/bedrock-runtime/BedrockRuntimeClient.h b/generated/src/aws-cpp-sdk-bedrock-runtime/include/aws/bedrock-runtime/BedrockRuntimeClient.h
index f286e7040669..ddb7f3a45599 100644
--- a/generated/src/aws-cpp-sdk-bedrock-runtime/include/aws/bedrock-runtime/BedrockRuntimeClient.h
+++ b/generated/src/aws-cpp-sdk-bedrock-runtime/include/aws/bedrock-runtime/BedrockRuntimeClient.h
@@ -516,7 +516,7 @@ class AWS_BEDROCKRUNTIME_API BedrockRuntimeClient
     return SubmitAsync(&BedrockRuntimeClient::StartAsyncInvoke, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<BedrockRuntimeEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-bedrock/include/aws/bedrock/BedrockClient.h b/generated/src/aws-cpp-sdk-bedrock/include/aws/bedrock/BedrockClient.h
index 08a9411d60fb..28aca2324a3d 100644
--- a/generated/src/aws-cpp-sdk-bedrock/include/aws/bedrock/BedrockClient.h
+++ b/generated/src/aws-cpp-sdk-bedrock/include/aws/bedrock/BedrockClient.h
@@ -3180,7 +3180,7 @@ class AWS_BEDROCK_API BedrockClient
     return SubmitAsync(&BedrockClient::UpdateProvisionedModelThroughput, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<BedrockEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-billing/include/aws/billing/BillingClient.h b/generated/src/aws-cpp-sdk-billing/include/aws/billing/BillingClient.h
index e4b9c8d7392d..a7bdb93c2842 100644
--- a/generated/src/aws-cpp-sdk-billing/include/aws/billing/BillingClient.h
+++ b/generated/src/aws-cpp-sdk-billing/include/aws/billing/BillingClient.h
@@ -404,7 +404,7 @@ class AWS_BILLING_API BillingClient : public Aws::Client::AWSJsonClient, public
     return SubmitAsync(&BillingClient::UpdateBillingView, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<BillingEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-billingconductor/include/aws/billingconductor/BillingConductorClient.h b/generated/src/aws-cpp-sdk-billingconductor/include/aws/billingconductor/BillingConductorClient.h
index 19a8b18fbb05..6d9fa60c2cc9 100644
--- a/generated/src/aws-cpp-sdk-billingconductor/include/aws/billingconductor/BillingConductorClient.h
+++ b/generated/src/aws-cpp-sdk-billingconductor/include/aws/billingconductor/BillingConductorClient.h
@@ -995,7 +995,7 @@ class AWS_BILLINGCONDUCTOR_API BillingConductorClient : public Aws::Client::AWSJ
     return SubmitAsync(&BillingConductorClient::UpdatePricingRule, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<BillingConductorEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-braket/include/aws/braket/BraketClient.h b/generated/src/aws-cpp-sdk-braket/include/aws/braket/BraketClient.h
index e930c92cba57..bc36582337f3 100644
--- a/generated/src/aws-cpp-sdk-braket/include/aws/braket/BraketClient.h
+++ b/generated/src/aws-cpp-sdk-braket/include/aws/braket/BraketClient.h
@@ -559,7 +559,7 @@ class AWS_BRAKET_API BraketClient : public Aws::Client::AWSJsonClient, public Aw
     return SubmitAsync(&BraketClient::UpdateSpendingLimit, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<BraketEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-budgets/include/aws/budgets/BudgetsClient.h b/generated/src/aws-cpp-sdk-budgets/include/aws/budgets/BudgetsClient.h
index d65665c66ac6..0f500acf00fc 100644
--- a/generated/src/aws-cpp-sdk-budgets/include/aws/budgets/BudgetsClient.h
+++ b/generated/src/aws-cpp-sdk-budgets/include/aws/budgets/BudgetsClient.h
@@ -841,7 +841,7 @@ class AWS_BUDGETS_API BudgetsClient : public Aws::Client::AWSJsonClient, public
     return SubmitAsync(&BudgetsClient::UpdateSubscriber, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<BudgetsEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-ce/include/aws/ce/CostExplorerClient.h b/generated/src/aws-cpp-sdk-ce/include/aws/ce/CostExplorerClient.h
index e088ef01e6f4..188581ed2a12 100644
--- a/generated/src/aws-cpp-sdk-ce/include/aws/ce/CostExplorerClient.h
+++ b/generated/src/aws-cpp-sdk-ce/include/aws/ce/CostExplorerClient.h
@@ -1573,7 +1573,7 @@ class AWS_COSTEXPLORER_API CostExplorerClient : public Aws::Client::AWSJsonClien
     return SubmitAsync(&CostExplorerClient::UpdateCostCategoryDefinition, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<CostExplorerEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-chatbot/include/aws/chatbot/ChatbotClient.h b/generated/src/aws-cpp-sdk-chatbot/include/aws/chatbot/ChatbotClient.h
index 13f06ccae57d..531b1c530995 100644
--- a/generated/src/aws-cpp-sdk-chatbot/include/aws/chatbot/ChatbotClient.h
+++ b/generated/src/aws-cpp-sdk-chatbot/include/aws/chatbot/ChatbotClient.h
@@ -1061,7 +1061,7 @@ class AWS_CHATBOT_API ChatbotClient : public Aws::Client::AWSJsonClient, public
     return SubmitAsync(&ChatbotClient::UpdateSlackChannelConfiguration, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<ChatbotEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-chime-sdk-identity/include/aws/chime-sdk-identity/ChimeSDKIdentityClient.h b/generated/src/aws-cpp-sdk-chime-sdk-identity/include/aws/chime-sdk-identity/ChimeSDKIdentityClient.h
index 452c3525149d..117b0aa078f5 100644
--- a/generated/src/aws-cpp-sdk-chime-sdk-identity/include/aws/chime-sdk-identity/ChimeSDKIdentityClient.h
+++ b/generated/src/aws-cpp-sdk-chime-sdk-identity/include/aws/chime-sdk-identity/ChimeSDKIdentityClient.h
@@ -931,7 +931,7 @@ class AWS_CHIMESDKIDENTITY_API ChimeSDKIdentityClient : public Aws::Client::AWSJ
     return SubmitAsync(&ChimeSDKIdentityClient::UpdateAppInstanceUserEndpoint, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<ChimeSDKIdentityEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-chime-sdk-media-pipelines/include/aws/chime-sdk-media-pipelines/ChimeSDKMediaPipelinesClient.h b/generated/src/aws-cpp-sdk-chime-sdk-media-pipelines/include/aws/chime-sdk-media-pipelines/ChimeSDKMediaPipelinesClient.h
index c7ec8d5bf34f..1348bbac56cd 100644
--- a/generated/src/aws-cpp-sdk-chime-sdk-media-pipelines/include/aws/chime-sdk-media-pipelines/ChimeSDKMediaPipelinesClient.h
+++ b/generated/src/aws-cpp-sdk-chime-sdk-media-pipelines/include/aws/chime-sdk-media-pipelines/ChimeSDKMediaPipelinesClient.h
@@ -997,7 +997,7 @@ class AWS_CHIMESDKMEDIAPIPELINES_API ChimeSDKMediaPipelinesClient
     return SubmitAsync(&ChimeSDKMediaPipelinesClient::UpdateMediaPipelineKinesisVideoStreamPool, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<ChimeSDKMediaPipelinesEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-chime-sdk-meetings/include/aws/chime-sdk-meetings/ChimeSDKMeetingsClient.h b/generated/src/aws-cpp-sdk-chime-sdk-meetings/include/aws/chime-sdk-meetings/ChimeSDKMeetingsClient.h
index d5dda4e106ca..95205553bdb3 100644
--- a/generated/src/aws-cpp-sdk-chime-sdk-meetings/include/aws/chime-sdk-meetings/ChimeSDKMeetingsClient.h
+++ b/generated/src/aws-cpp-sdk-chime-sdk-meetings/include/aws/chime-sdk-meetings/ChimeSDKMeetingsClient.h
@@ -682,7 +682,7 @@ class AWS_CHIMESDKMEETINGS_API ChimeSDKMeetingsClient : public Aws::Client::AWSJ
     return SubmitAsync(&ChimeSDKMeetingsClient::UpdateAttendeeCapabilities, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<ChimeSDKMeetingsEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-chime-sdk-messaging/include/aws/chime-sdk-messaging/ChimeSDKMessagingClient.h b/generated/src/aws-cpp-sdk-chime-sdk-messaging/include/aws/chime-sdk-messaging/ChimeSDKMessagingClient.h
index 83bafabbf4e4..cdb202a92895 100644
--- a/generated/src/aws-cpp-sdk-chime-sdk-messaging/include/aws/chime-sdk-messaging/ChimeSDKMessagingClient.h
+++ b/generated/src/aws-cpp-sdk-chime-sdk-messaging/include/aws/chime-sdk-messaging/ChimeSDKMessagingClient.h
@@ -1684,7 +1684,7 @@ class AWS_CHIMESDKMESSAGING_API ChimeSDKMessagingClient : public Aws::Client::AW
     return SubmitAsync(&ChimeSDKMessagingClient::UpdateChannelReadMarker, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<ChimeSDKMessagingEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-chime-sdk-voice/include/aws/chime-sdk-voice/ChimeSDKVoiceClient.h b/generated/src/aws-cpp-sdk-chime-sdk-voice/include/aws/chime-sdk-voice/ChimeSDKVoiceClient.h
index 30e1b71f880f..65922d3fe9ac 100644
--- a/generated/src/aws-cpp-sdk-chime-sdk-voice/include/aws/chime-sdk-voice/ChimeSDKVoiceClient.h
+++ b/generated/src/aws-cpp-sdk-chime-sdk-voice/include/aws/chime-sdk-voice/ChimeSDKVoiceClient.h
@@ -2844,7 +2844,7 @@ class AWS_CHIMESDKVOICE_API ChimeSDKVoiceClient : public Aws::Client::AWSJsonCli
     return SubmitAsync(&ChimeSDKVoiceClient::ValidateE911Address, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<ChimeSDKVoiceEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-chime/include/aws/chime/ChimeClient.h b/generated/src/aws-cpp-sdk-chime/include/aws/chime/ChimeClient.h
index 54d65847de9e..b605627b528c 100644
--- a/generated/src/aws-cpp-sdk-chime/include/aws/chime/ChimeClient.h
+++ b/generated/src/aws-cpp-sdk-chime/include/aws/chime/ChimeClient.h
@@ -1910,7 +1910,7 @@ class AWS_CHIME_API ChimeClient : public Aws::Client::AWSJsonClient, public Aws:
     return SubmitAsync(&ChimeClient::UpdateUserSettings, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<ChimeEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-cleanrooms/include/aws/cleanrooms/CleanRoomsClient.h b/generated/src/aws-cpp-sdk-cleanrooms/include/aws/cleanrooms/CleanRoomsClient.h
index 9a08f2ee3e09..7e69b4141ec7 100644
--- a/generated/src/aws-cpp-sdk-cleanrooms/include/aws/cleanrooms/CleanRoomsClient.h
+++ b/generated/src/aws-cpp-sdk-cleanrooms/include/aws/cleanrooms/CleanRoomsClient.h
@@ -2575,7 +2575,7 @@ class AWS_CLEANROOMS_API CleanRoomsClient : public Aws::Client::AWSJsonClient,
     return SubmitAsync(&CleanRoomsClient::UpdateProtectedQuery, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<CleanRoomsEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-cleanroomsml/include/aws/cleanroomsml/CleanRoomsMLClient.h b/generated/src/aws-cpp-sdk-cleanroomsml/include/aws/cleanroomsml/CleanRoomsMLClient.h
index f0d790fc5c31..1f893593b9fa 100644
--- a/generated/src/aws-cpp-sdk-cleanroomsml/include/aws/cleanroomsml/CleanRoomsMLClient.h
+++ b/generated/src/aws-cpp-sdk-cleanroomsml/include/aws/cleanroomsml/CleanRoomsMLClient.h
@@ -1792,7 +1792,7 @@ class AWS_CLEANROOMSML_API CleanRoomsMLClient : public Aws::Client::AWSJsonClien
     return SubmitAsync(&CleanRoomsMLClient::UpdateConfiguredAudienceModel, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<CleanRoomsMLEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-cloud9/include/aws/cloud9/Cloud9Client.h b/generated/src/aws-cpp-sdk-cloud9/include/aws/cloud9/Cloud9Client.h
index d6453a7b4d9b..e560ac120af0 100644
--- a/generated/src/aws-cpp-sdk-cloud9/include/aws/cloud9/Cloud9Client.h
+++ b/generated/src/aws-cpp-sdk-cloud9/include/aws/cloud9/Cloud9Client.h
@@ -510,7 +510,7 @@ class AWS_CLOUD9_API Cloud9Client : public Aws::Client::AWSJsonClient, public Aw
     return SubmitAsync(&Cloud9Client::UpdateEnvironmentMembership, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<Cloud9EndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-cloudcontrol/include/aws/cloudcontrol/CloudControlApiClient.h b/generated/src/aws-cpp-sdk-cloudcontrol/include/aws/cloudcontrol/CloudControlApiClient.h
index b820208a9927..5407581b7422 100644
--- a/generated/src/aws-cpp-sdk-cloudcontrol/include/aws/cloudcontrol/CloudControlApiClient.h
+++ b/generated/src/aws-cpp-sdk-cloudcontrol/include/aws/cloudcontrol/CloudControlApiClient.h
@@ -340,7 +340,7 @@ class AWS_CLOUDCONTROLAPI_API CloudControlApiClient : public Aws::Client::AWSJso
     return SubmitAsync(&CloudControlApiClient::UpdateResource, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<CloudControlApiEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-clouddirectory/include/aws/clouddirectory/CloudDirectoryClient.h b/generated/src/aws-cpp-sdk-clouddirectory/include/aws/clouddirectory/CloudDirectoryClient.h
index e69a8acb240b..c53e465dbe1e 100644
--- a/generated/src/aws-cpp-sdk-clouddirectory/include/aws/clouddirectory/CloudDirectoryClient.h
+++ b/generated/src/aws-cpp-sdk-clouddirectory/include/aws/clouddirectory/CloudDirectoryClient.h
@@ -1921,7 +1921,7 @@ class AWS_CLOUDDIRECTORY_API CloudDirectoryClient : public Aws::Client::AWSJsonC
     return SubmitAsync(&CloudDirectoryClient::UpgradePublishedSchema, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<CloudDirectoryEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-cloudformation/include/aws/cloudformation/CloudFormationClient.h b/generated/src/aws-cpp-sdk-cloudformation/include/aws/cloudformation/CloudFormationClient.h
index b2f0dc714d8c..2aa5edf92058 100644
--- a/generated/src/aws-cpp-sdk-cloudformation/include/aws/cloudformation/CloudFormationClient.h
+++ b/generated/src/aws-cpp-sdk-cloudformation/include/aws/cloudformation/CloudFormationClient.h
@@ -3084,7 +3084,7 @@ class AWS_CLOUDFORMATION_API CloudFormationClient : public Aws::Client::AWSXMLCl
     return SubmitAsync(&CloudFormationClient::ValidateTemplate, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<CloudFormationEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-cloudfront-keyvaluestore/include/aws/cloudfront-keyvaluestore/CloudFrontKeyValueStoreClient.h b/generated/src/aws-cpp-sdk-cloudfront-keyvaluestore/include/aws/cloudfront-keyvaluestore/CloudFrontKeyValueStoreClient.h
index 4d5bb61314e9..168be8919c17 100644
--- a/generated/src/aws-cpp-sdk-cloudfront-keyvaluestore/include/aws/cloudfront-keyvaluestore/CloudFrontKeyValueStoreClient.h
+++ b/generated/src/aws-cpp-sdk-cloudfront-keyvaluestore/include/aws/cloudfront-keyvaluestore/CloudFrontKeyValueStoreClient.h
@@ -232,7 +232,7 @@ class AWS_CLOUDFRONTKEYVALUESTORE_API CloudFrontKeyValueStoreClient
     return SubmitAsync(&CloudFrontKeyValueStoreClient::UpdateKeys, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<CloudFrontKeyValueStoreEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-cloudfront/include/aws/cloudfront/CloudFrontClient.h b/generated/src/aws-cpp-sdk-cloudfront/include/aws/cloudfront/CloudFrontClient.h
index ba2c831a5635..67c6b627cb45 100644
--- a/generated/src/aws-cpp-sdk-cloudfront/include/aws/cloudfront/CloudFrontClient.h
+++ b/generated/src/aws-cpp-sdk-cloudfront/include/aws/cloudfront/CloudFrontClient.h
@@ -5583,7 +5583,7 @@ class AWS_CLOUDFRONT_API CloudFrontClient : public Aws::Client::AWSXMLClient,
     return SubmitAsync(&CloudFrontClient::VerifyDnsConfiguration2020_05_31, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<CloudFrontEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-cloudhsm/include/aws/cloudhsm/CloudHSMClient.h b/generated/src/aws-cpp-sdk-cloudhsm/include/aws/cloudhsm/CloudHSMClient.h
index f653ea46ea0b..817446b2d992 100644
--- a/generated/src/aws-cpp-sdk-cloudhsm/include/aws/cloudhsm/CloudHSMClient.h
+++ b/generated/src/aws-cpp-sdk-cloudhsm/include/aws/cloudhsm/CloudHSMClient.h
@@ -84,7 +84,7 @@ class AWS_CLOUDHSM_API CloudHSMClient : public Aws::Client::AWSJsonClient,
   /* End of legacy constructors due deprecation */
   virtual ~CloudHSMClient();
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<CloudHSMEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-cloudhsmv2/include/aws/cloudhsmv2/CloudHSMV2Client.h b/generated/src/aws-cpp-sdk-cloudhsmv2/include/aws/cloudhsmv2/CloudHSMV2Client.h
index 9b8657e1c153..762db4e49182 100644
--- a/generated/src/aws-cpp-sdk-cloudhsmv2/include/aws/cloudhsmv2/CloudHSMV2Client.h
+++ b/generated/src/aws-cpp-sdk-cloudhsmv2/include/aws/cloudhsmv2/CloudHSMV2Client.h
@@ -634,7 +634,7 @@ class AWS_CLOUDHSMV2_API CloudHSMV2Client : public Aws::Client::AWSJsonClient,
     return SubmitAsync(&CloudHSMV2Client::UntagResource, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<CloudHSMV2EndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-cloudsearch/include/aws/cloudsearch/CloudSearchClient.h b/generated/src/aws-cpp-sdk-cloudsearch/include/aws/cloudsearch/CloudSearchClient.h
index 9bab39e24b2f..665f8f6294f2 100644
--- a/generated/src/aws-cpp-sdk-cloudsearch/include/aws/cloudsearch/CloudSearchClient.h
+++ b/generated/src/aws-cpp-sdk-cloudsearch/include/aws/cloudsearch/CloudSearchClient.h
@@ -917,7 +917,7 @@ class AWS_CLOUDSEARCH_API CloudSearchClient : public Aws::Client::AWSXMLClient,
     return SubmitAsync(&CloudSearchClient::UpdateServiceAccessPolicies, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<CloudSearchEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-cloudsearchdomain/include/aws/cloudsearchdomain/CloudSearchDomainClient.h b/generated/src/aws-cpp-sdk-cloudsearchdomain/include/aws/cloudsearchdomain/CloudSearchDomainClient.h
index 393adc3c0dd9..0be72a042c40 100644
--- a/generated/src/aws-cpp-sdk-cloudsearchdomain/include/aws/cloudsearchdomain/CloudSearchDomainClient.h
+++ b/generated/src/aws-cpp-sdk-cloudsearchdomain/include/aws/cloudsearchdomain/CloudSearchDomainClient.h
@@ -214,7 +214,7 @@ class AWS_CLOUDSEARCHDOMAIN_API CloudSearchDomainClient : public Aws::Client::AW
     return SubmitAsync(&CloudSearchDomainClient::UploadDocuments, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<CloudSearchDomainEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-cloudtrail-data/include/aws/cloudtrail-data/CloudTrailDataClient.h b/generated/src/aws-cpp-sdk-cloudtrail-data/include/aws/cloudtrail-data/CloudTrailDataClient.h
index cd884fa6d7e5..1a9b8896505f 100644
--- a/generated/src/aws-cpp-sdk-cloudtrail-data/include/aws/cloudtrail-data/CloudTrailDataClient.h
+++ b/generated/src/aws-cpp-sdk-cloudtrail-data/include/aws/cloudtrail-data/CloudTrailDataClient.h
@@ -111,7 +111,7 @@ class AWS_CLOUDTRAILDATA_API CloudTrailDataClient : public Aws::Client::AWSJsonC
     return SubmitAsync(&CloudTrailDataClient::PutAuditEvents, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<CloudTrailDataEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-cloudtrail/include/aws/cloudtrail/CloudTrailClient.h b/generated/src/aws-cpp-sdk-cloudtrail/include/aws/cloudtrail/CloudTrailClient.h
index da348aa0dbda..d757a967aa0b 100644
--- a/generated/src/aws-cpp-sdk-cloudtrail/include/aws/cloudtrail/CloudTrailClient.h
+++ b/generated/src/aws-cpp-sdk-cloudtrail/include/aws/cloudtrail/CloudTrailClient.h
@@ -2066,7 +2066,7 @@ class AWS_CLOUDTRAIL_API CloudTrailClient : public Aws::Client::AWSJsonClient,
     return SubmitAsync(&CloudTrailClient::UpdateTrail, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<CloudTrailEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-codeartifact/include/aws/codeartifact/CodeArtifactClient.h b/generated/src/aws-cpp-sdk-codeartifact/include/aws/codeartifact/CodeArtifactClient.h
index 231a2955b770..f30834decb61 100644
--- a/generated/src/aws-cpp-sdk-codeartifact/include/aws/codeartifact/CodeArtifactClient.h
+++ b/generated/src/aws-cpp-sdk-codeartifact/include/aws/codeartifact/CodeArtifactClient.h
@@ -1731,7 +1731,7 @@ class AWS_CODEARTIFACT_API CodeArtifactClient : public Aws::Client::AWSJsonClien
     return SubmitAsync(&CodeArtifactClient::UpdateRepository, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<CodeArtifactEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-codebuild/include/aws/codebuild/CodeBuildClient.h b/generated/src/aws-cpp-sdk-codebuild/include/aws/codebuild/CodeBuildClient.h
index 29c445c9ed50..fe4799ac87aa 100644
--- a/generated/src/aws-cpp-sdk-codebuild/include/aws/codebuild/CodeBuildClient.h
+++ b/generated/src/aws-cpp-sdk-codebuild/include/aws/codebuild/CodeBuildClient.h
@@ -1697,7 +1697,7 @@ class AWS_CODEBUILD_API CodeBuildClient : public Aws::Client::AWSJsonClient,
     return SubmitAsync(&CodeBuildClient::UpdateWebhook, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<CodeBuildEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-codecatalyst/include/aws/codecatalyst/CodeCatalystClient.h b/generated/src/aws-cpp-sdk-codecatalyst/include/aws/codecatalyst/CodeCatalystClient.h
index e8cbc81f7e20..bd7002fdd5a6 100644
--- a/generated/src/aws-cpp-sdk-codecatalyst/include/aws/codecatalyst/CodeCatalystClient.h
+++ b/generated/src/aws-cpp-sdk-codecatalyst/include/aws/codecatalyst/CodeCatalystClient.h
@@ -1164,7 +1164,7 @@ class AWS_CODECATALYST_API CodeCatalystClient : public Aws::Client::AWSJsonClien
     return SubmitAsync(&CodeCatalystClient::VerifySession, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<CodeCatalystEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-codecommit/include/aws/codecommit/CodeCommitClient.h b/generated/src/aws-cpp-sdk-codecommit/include/aws/codecommit/CodeCommitClient.h
index ed0c9b99dbac..c238f97d1c13 100644
--- a/generated/src/aws-cpp-sdk-codecommit/include/aws/codecommit/CodeCommitClient.h
+++ b/generated/src/aws-cpp-sdk-codecommit/include/aws/codecommit/CodeCommitClient.h
@@ -2552,7 +2552,7 @@ class AWS_CODECOMMIT_API CodeCommitClient : public Aws::Client::AWSJsonClient,
     return SubmitAsync(&CodeCommitClient::UpdateRepositoryName, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<CodeCommitEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-codeconnections/include/aws/codeconnections/CodeConnectionsClient.h b/generated/src/aws-cpp-sdk-codeconnections/include/aws/codeconnections/CodeConnectionsClient.h
index 012c75655b56..045bf3ec1513 100644
--- a/generated/src/aws-cpp-sdk-codeconnections/include/aws/codeconnections/CodeConnectionsClient.h
+++ b/generated/src/aws-cpp-sdk-codeconnections/include/aws/codeconnections/CodeConnectionsClient.h
@@ -860,7 +860,7 @@ class AWS_CODECONNECTIONS_API CodeConnectionsClient : public Aws::Client::AWSJso
     return SubmitAsync(&CodeConnectionsClient::UpdateSyncConfiguration, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<CodeConnectionsEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-codedeploy/include/aws/codedeploy/CodeDeployClient.h b/generated/src/aws-cpp-sdk-codedeploy/include/aws/codedeploy/CodeDeployClient.h
index ba438c11660f..1c06731b9dd4 100644
--- a/generated/src/aws-cpp-sdk-codedeploy/include/aws/codedeploy/CodeDeployClient.h
+++ b/generated/src/aws-cpp-sdk-codedeploy/include/aws/codedeploy/CodeDeployClient.h
@@ -1356,7 +1356,7 @@ class AWS_CODEDEPLOY_API CodeDeployClient : public Aws::Client::AWSJsonClient,
     return SubmitAsync(&CodeDeployClient::UpdateDeploymentGroup, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<CodeDeployEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-codeguru-reviewer/include/aws/codeguru-reviewer/CodeGuruReviewerClient.h b/generated/src/aws-cpp-sdk-codeguru-reviewer/include/aws/codeguru-reviewer/CodeGuruReviewerClient.h
index 72b57cd7153d..8f4a957d34e3 100644
--- a/generated/src/aws-cpp-sdk-codeguru-reviewer/include/aws/codeguru-reviewer/CodeGuruReviewerClient.h
+++ b/generated/src/aws-cpp-sdk-codeguru-reviewer/include/aws/codeguru-reviewer/CodeGuruReviewerClient.h
@@ -517,7 +517,7 @@ class AWS_CODEGURUREVIEWER_API CodeGuruReviewerClient : public Aws::Client::AWSJ
     return SubmitAsync(&CodeGuruReviewerClient::UntagResource, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<CodeGuruReviewerEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-codeguru-security/include/aws/codeguru-security/CodeGuruSecurityClient.h b/generated/src/aws-cpp-sdk-codeguru-security/include/aws/codeguru-security/CodeGuruSecurityClient.h
index a1d07bd82de2..2d6b8b17a028 100644
--- a/generated/src/aws-cpp-sdk-codeguru-security/include/aws/codeguru-security/CodeGuruSecurityClient.h
+++ b/generated/src/aws-cpp-sdk-codeguru-security/include/aws/codeguru-security/CodeGuruSecurityClient.h
@@ -441,7 +441,7 @@ class AWS_CODEGURUSECURITY_API CodeGuruSecurityClient : public Aws::Client::AWSJ
     return SubmitAsync(&CodeGuruSecurityClient::UpdateAccountConfiguration, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<CodeGuruSecurityEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-codeguruprofiler/include/aws/codeguruprofiler/CodeGuruProfilerClient.h b/generated/src/aws-cpp-sdk-codeguruprofiler/include/aws/codeguruprofiler/CodeGuruProfilerClient.h
index 0411b15ea521..12d3197b384c 100644
--- a/generated/src/aws-cpp-sdk-codeguruprofiler/include/aws/codeguruprofiler/CodeGuruProfilerClient.h
+++ b/generated/src/aws-cpp-sdk-codeguruprofiler/include/aws/codeguruprofiler/CodeGuruProfilerClient.h
@@ -797,7 +797,7 @@ class AWS_CODEGURUPROFILER_API CodeGuruProfilerClient : public Aws::Client::AWSJ
     return SubmitAsync(&CodeGuruProfilerClient::UpdateProfilingGroup, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<CodeGuruProfilerEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-codepipeline/include/aws/codepipeline/CodePipelineClient.h b/generated/src/aws-cpp-sdk-codepipeline/include/aws/codepipeline/CodePipelineClient.h
index 538ec55be2bd..fea4ab8cbd54 100644
--- a/generated/src/aws-cpp-sdk-codepipeline/include/aws/codepipeline/CodePipelineClient.h
+++ b/generated/src/aws-cpp-sdk-codepipeline/include/aws/codepipeline/CodePipelineClient.h
@@ -1433,7 +1433,7 @@ class AWS_CODEPIPELINE_API CodePipelineClient : public Aws::Client::AWSJsonClien
     return SubmitAsync(&CodePipelineClient::UpdatePipeline, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<CodePipelineEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-codestar-connections/include/aws/codestar-connections/CodeStarconnectionsClient.h b/generated/src/aws-cpp-sdk-codestar-connections/include/aws/codestar-connections/CodeStarconnectionsClient.h
index f2bc0a60b687..304e63111799 100644
--- a/generated/src/aws-cpp-sdk-codestar-connections/include/aws/codestar-connections/CodeStarconnectionsClient.h
+++ b/generated/src/aws-cpp-sdk-codestar-connections/include/aws/codestar-connections/CodeStarconnectionsClient.h
@@ -862,7 +862,7 @@ class AWS_CODESTARCONNECTIONS_API CodeStarconnectionsClient
     return SubmitAsync(&CodeStarconnectionsClient::UpdateSyncConfiguration, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<CodeStarconnectionsEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-codestar-notifications/include/aws/codestar-notifications/CodeStarNotificationsClient.h b/generated/src/aws-cpp-sdk-codestar-notifications/include/aws/codestar-notifications/CodeStarNotificationsClient.h
index 4188101becd5..30a52abfa14f 100644
--- a/generated/src/aws-cpp-sdk-codestar-notifications/include/aws/codestar-notifications/CodeStarNotificationsClient.h
+++ b/generated/src/aws-cpp-sdk-codestar-notifications/include/aws/codestar-notifications/CodeStarNotificationsClient.h
@@ -462,7 +462,7 @@ class AWS_CODESTARNOTIFICATIONS_API CodeStarNotificationsClient
     return SubmitAsync(&CodeStarNotificationsClient::UpdateNotificationRule, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<CodeStarNotificationsEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-cognito-identity/include/aws/cognito-identity/CognitoIdentityClient.h b/generated/src/aws-cpp-sdk-cognito-identity/include/aws/cognito-identity/CognitoIdentityClient.h
index a8bad870fb3d..b1bd10385775 100644
--- a/generated/src/aws-cpp-sdk-cognito-identity/include/aws/cognito-identity/CognitoIdentityClient.h
+++ b/generated/src/aws-cpp-sdk-cognito-identity/include/aws/cognito-identity/CognitoIdentityClient.h
@@ -811,7 +811,7 @@ class AWS_COGNITOIDENTITY_API CognitoIdentityClient : public Aws::Client::AWSJso
     return SubmitAsync(&CognitoIdentityClient::UpdateIdentityPool, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<CognitoIdentityEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-cognito-idp/include/aws/cognito-idp/CognitoIdentityProviderClient.h b/generated/src/aws-cpp-sdk-cognito-idp/include/aws/cognito-idp/CognitoIdentityProviderClient.h
index 2960e774ef8f..6cb5f17b235f 100644
--- a/generated/src/aws-cpp-sdk-cognito-idp/include/aws/cognito-idp/CognitoIdentityProviderClient.h
+++ b/generated/src/aws-cpp-sdk-cognito-idp/include/aws/cognito-idp/CognitoIdentityProviderClient.h
@@ -4995,7 +4995,7 @@ class AWS_COGNITOIDENTITYPROVIDER_API CognitoIdentityProviderClient
     return SubmitAsync(&CognitoIdentityProviderClient::VerifyUserAttribute, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<CognitoIdentityProviderEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-cognito-sync/include/aws/cognito-sync/CognitoSyncClient.h b/generated/src/aws-cpp-sdk-cognito-sync/include/aws/cognito-sync/CognitoSyncClient.h
index 6929786a3e44..85aeaaae7e87 100644
--- a/generated/src/aws-cpp-sdk-cognito-sync/include/aws/cognito-sync/CognitoSyncClient.h
+++ b/generated/src/aws-cpp-sdk-cognito-sync/include/aws/cognito-sync/CognitoSyncClient.h
@@ -608,7 +608,7 @@ class AWS_COGNITOSYNC_API CognitoSyncClient : public Aws::Client::AWSJsonClient,
     return SubmitAsync(&CognitoSyncClient::UpdateRecords, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<CognitoSyncEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-comprehend/include/aws/comprehend/ComprehendClient.h b/generated/src/aws-cpp-sdk-comprehend/include/aws/comprehend/ComprehendClient.h
index 0a77c057398f..828710127c9e 100644
--- a/generated/src/aws-cpp-sdk-comprehend/include/aws/comprehend/ComprehendClient.h
+++ b/generated/src/aws-cpp-sdk-comprehend/include/aws/comprehend/ComprehendClient.h
@@ -2684,7 +2684,7 @@ class AWS_COMPREHEND_API ComprehendClient : public Aws::Client::AWSJsonClient,
     return SubmitAsync(&ComprehendClient::UpdateFlywheel, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<ComprehendEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-comprehendmedical/include/aws/comprehendmedical/ComprehendMedicalClient.h b/generated/src/aws-cpp-sdk-comprehendmedical/include/aws/comprehendmedical/ComprehendMedicalClient.h
index f4e8fa1328d0..82c4905bab2c 100644
--- a/generated/src/aws-cpp-sdk-comprehendmedical/include/aws/comprehendmedical/ComprehendMedicalClient.h
+++ b/generated/src/aws-cpp-sdk-comprehendmedical/include/aws/comprehendmedical/ComprehendMedicalClient.h
@@ -811,7 +811,7 @@ class AWS_COMPREHENDMEDICAL_API ComprehendMedicalClient : public Aws::Client::AW
     return SubmitAsync(&ComprehendMedicalClient::StopSNOMEDCTInferenceJob, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<ComprehendMedicalEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-compute-optimizer-automation/include/aws/compute-optimizer-automation/ComputeOptimizerAutomationClient.h b/generated/src/aws-cpp-sdk-compute-optimizer-automation/include/aws/compute-optimizer-automation/ComputeOptimizerAutomationClient.h
index 83d5840afade..e74d849c4621 100644
--- a/generated/src/aws-cpp-sdk-compute-optimizer-automation/include/aws/compute-optimizer-automation/ComputeOptimizerAutomationClient.h
+++ b/generated/src/aws-cpp-sdk-compute-optimizer-automation/include/aws/compute-optimizer-automation/ComputeOptimizerAutomationClient.h
@@ -753,7 +753,7 @@ class AWS_COMPUTEOPTIMIZERAUTOMATION_API ComputeOptimizerAutomationClient
     return SubmitAsync(&ComputeOptimizerAutomationClient::UpdateEnrollmentConfiguration, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<ComputeOptimizerAutomationEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-compute-optimizer/include/aws/compute-optimizer/ComputeOptimizerClient.h b/generated/src/aws-cpp-sdk-compute-optimizer/include/aws/compute-optimizer/ComputeOptimizerClient.h
index c73c5fd0efe5..a122df3a4dc2 100644
--- a/generated/src/aws-cpp-sdk-compute-optimizer/include/aws/compute-optimizer/ComputeOptimizerClient.h
+++ b/generated/src/aws-cpp-sdk-compute-optimizer/include/aws/compute-optimizer/ComputeOptimizerClient.h
@@ -1074,7 +1074,7 @@ class AWS_COMPUTEOPTIMIZER_API ComputeOptimizerClient : public Aws::Client::AWSJ
     return SubmitAsync(&ComputeOptimizerClient::UpdateEnrollmentStatus, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<ComputeOptimizerEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-config/include/aws/config/ConfigServiceClient.h b/generated/src/aws-cpp-sdk-config/include/aws/config/ConfigServiceClient.h
index d508c0d0b2c2..852932e6f645 100644
--- a/generated/src/aws-cpp-sdk-config/include/aws/config/ConfigServiceClient.h
+++ b/generated/src/aws-cpp-sdk-config/include/aws/config/ConfigServiceClient.h
@@ -3666,7 +3666,7 @@ class AWS_CONFIGSERVICE_API ConfigServiceClient : public Aws::Client::AWSJsonCli
     return SubmitAsync(&ConfigServiceClient::UntagResource, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<ConfigServiceEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-connect-contact-lens/include/aws/connect-contact-lens/ConnectContactLensClient.h b/generated/src/aws-cpp-sdk-connect-contact-lens/include/aws/connect-contact-lens/ConnectContactLensClient.h
index 1d98e154280c..aa01247851a6 100644
--- a/generated/src/aws-cpp-sdk-connect-contact-lens/include/aws/connect-contact-lens/ConnectContactLensClient.h
+++ b/generated/src/aws-cpp-sdk-connect-contact-lens/include/aws/connect-contact-lens/ConnectContactLensClient.h
@@ -118,7 +118,7 @@ class AWS_CONNECTCONTACTLENS_API ConnectContactLensClient : public Aws::Client::
     return SubmitAsync(&ConnectContactLensClient::ListRealtimeContactAnalysisSegments, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<ConnectContactLensEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-connect/include/aws/connect/ConnectClient.h b/generated/src/aws-cpp-sdk-connect/include/aws/connect/ConnectClient.h
index ed1f3e481298..3191ee9b3845 100644
--- a/generated/src/aws-cpp-sdk-connect/include/aws/connect/ConnectClient.h
+++ b/generated/src/aws-cpp-sdk-connect/include/aws/connect/ConnectClient.h
@@ -11104,7 +11104,7 @@ class AWS_CONNECT_API ConnectClient : public Aws::Client::AWSJsonClient, public
     return SubmitAsync(&ConnectClient::UpdateWorkspaceVisibility, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<ConnectEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-connectcampaigns/include/aws/connectcampaigns/ConnectCampaignsClient.h b/generated/src/aws-cpp-sdk-connectcampaigns/include/aws/connectcampaigns/ConnectCampaignsClient.h
index eac1b4d4de79..f27aa15e8649 100644
--- a/generated/src/aws-cpp-sdk-connectcampaigns/include/aws/connectcampaigns/ConnectCampaignsClient.h
+++ b/generated/src/aws-cpp-sdk-connectcampaigns/include/aws/connectcampaigns/ConnectCampaignsClient.h
@@ -675,7 +675,7 @@ class AWS_CONNECTCAMPAIGNS_API ConnectCampaignsClient : public Aws::Client::AWSJ
     return SubmitAsync(&ConnectCampaignsClient::UpdateCampaignOutboundCallConfig, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<ConnectCampaignsEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-connectcampaignsv2/include/aws/connectcampaignsv2/ConnectCampaignsV2Client.h b/generated/src/aws-cpp-sdk-connectcampaignsv2/include/aws/connectcampaignsv2/ConnectCampaignsV2Client.h
index 8e2d9874f19d..bb1d5e72f3cd 100644
--- a/generated/src/aws-cpp-sdk-connectcampaignsv2/include/aws/connectcampaignsv2/ConnectCampaignsV2Client.h
+++ b/generated/src/aws-cpp-sdk-connectcampaignsv2/include/aws/connectcampaignsv2/ConnectCampaignsV2Client.h
@@ -1060,7 +1060,7 @@ class AWS_CONNECTCAMPAIGNSV2_API ConnectCampaignsV2Client : public Aws::Client::
     return SubmitAsync(&ConnectCampaignsV2Client::UpdateCampaignSource, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<ConnectCampaignsV2EndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-connectcases/include/aws/connectcases/ConnectCasesClient.h b/generated/src/aws-cpp-sdk-connectcases/include/aws/connectcases/ConnectCasesClient.h
index 9e737877f1ba..60d8aebc6cf2 100644
--- a/generated/src/aws-cpp-sdk-connectcases/include/aws/connectcases/ConnectCasesClient.h
+++ b/generated/src/aws-cpp-sdk-connectcases/include/aws/connectcases/ConnectCasesClient.h
@@ -1376,7 +1376,7 @@ class AWS_CONNECTCASES_API ConnectCasesClient : public Aws::Client::AWSJsonClien
     return SubmitAsync(&ConnectCasesClient::UpdateTemplate, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<ConnectCasesEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-connectparticipant/include/aws/connectparticipant/ConnectParticipantClient.h b/generated/src/aws-cpp-sdk-connectparticipant/include/aws/connectparticipant/ConnectParticipantClient.h
index 859dd5d15c39..0143f049937e 100644
--- a/generated/src/aws-cpp-sdk-connectparticipant/include/aws/connectparticipant/ConnectParticipantClient.h
+++ b/generated/src/aws-cpp-sdk-connectparticipant/include/aws/connectparticipant/ConnectParticipantClient.h
@@ -534,7 +534,7 @@ class AWS_CONNECTPARTICIPANT_API ConnectParticipantClient : public Aws::Client::
     return SubmitAsync(&ConnectParticipantClient::StartAttachmentUpload, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<ConnectParticipantEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-controlcatalog/include/aws/controlcatalog/ControlCatalogClient.h b/generated/src/aws-cpp-sdk-controlcatalog/include/aws/controlcatalog/ControlCatalogClient.h
index 52a0b9346cdd..56b3e04782a4 100644
--- a/generated/src/aws-cpp-sdk-controlcatalog/include/aws/controlcatalog/ControlCatalogClient.h
+++ b/generated/src/aws-cpp-sdk-controlcatalog/include/aws/controlcatalog/ControlCatalogClient.h
@@ -271,7 +271,7 @@ class AWS_CONTROLCATALOG_API ControlCatalogClient : public Aws::Client::AWSJsonC
     return SubmitAsync(&ControlCatalogClient::ListObjectives, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<ControlCatalogEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-controltower/include/aws/controltower/ControlTowerClient.h b/generated/src/aws-cpp-sdk-controltower/include/aws/controltower/ControlTowerClient.h
index 7b57f0ad6316..4a40abc961c0 100644
--- a/generated/src/aws-cpp-sdk-controltower/include/aws/controltower/ControlTowerClient.h
+++ b/generated/src/aws-cpp-sdk-controltower/include/aws/controltower/ControlTowerClient.h
@@ -1103,7 +1103,7 @@ class AWS_CONTROLTOWER_API ControlTowerClient : public Aws::Client::AWSJsonClien
     return SubmitAsync(&ControlTowerClient::UpdateLandingZone, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<ControlTowerEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-cost-optimization-hub/include/aws/cost-optimization-hub/CostOptimizationHubClient.h b/generated/src/aws-cpp-sdk-cost-optimization-hub/include/aws/cost-optimization-hub/CostOptimizationHubClient.h
index a029e5724f04..a55f57fd7159 100644
--- a/generated/src/aws-cpp-sdk-cost-optimization-hub/include/aws/cost-optimization-hub/CostOptimizationHubClient.h
+++ b/generated/src/aws-cpp-sdk-cost-optimization-hub/include/aws/cost-optimization-hub/CostOptimizationHubClient.h
@@ -326,7 +326,7 @@ class AWS_COSTOPTIMIZATIONHUB_API CostOptimizationHubClient
     return SubmitAsync(&CostOptimizationHubClient::UpdatePreferences, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<CostOptimizationHubEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-cur/include/aws/cur/CostandUsageReportServiceClient.h b/generated/src/aws-cpp-sdk-cur/include/aws/cur/CostandUsageReportServiceClient.h
index b280fbd72757..52610fc71765 100644
--- a/generated/src/aws-cpp-sdk-cur/include/aws/cur/CostandUsageReportServiceClient.h
+++ b/generated/src/aws-cpp-sdk-cur/include/aws/cur/CostandUsageReportServiceClient.h
@@ -278,7 +278,7 @@ class AWS_COSTANDUSAGEREPORTSERVICE_API CostandUsageReportServiceClient
     return SubmitAsync(&CostandUsageReportServiceClient::UntagResource, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<CostandUsageReportServiceEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-customer-profiles/include/aws/customer-profiles/CustomerProfilesClient.h b/generated/src/aws-cpp-sdk-customer-profiles/include/aws/customer-profiles/CustomerProfilesClient.h
index 13e455a2c33b..dc4faae4baf1 100644
--- a/generated/src/aws-cpp-sdk-customer-profiles/include/aws/customer-profiles/CustomerProfilesClient.h
+++ b/generated/src/aws-cpp-sdk-customer-profiles/include/aws/customer-profiles/CustomerProfilesClient.h
@@ -2918,7 +2918,7 @@ class AWS_CUSTOMERPROFILES_API CustomerProfilesClient : public Aws::Client::AWSJ
     return SubmitAsync(&CustomerProfilesClient::UpdateRecommender, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<CustomerProfilesEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-databrew/include/aws/databrew/GlueDataBrewClient.h b/generated/src/aws-cpp-sdk-databrew/include/aws/databrew/GlueDataBrewClient.h
index 763665535f3a..5315aafbbd64 100644
--- a/generated/src/aws-cpp-sdk-databrew/include/aws/databrew/GlueDataBrewClient.h
+++ b/generated/src/aws-cpp-sdk-databrew/include/aws/databrew/GlueDataBrewClient.h
@@ -1233,7 +1233,7 @@ class AWS_GLUEDATABREW_API GlueDataBrewClient : public Aws::Client::AWSJsonClien
     return SubmitAsync(&GlueDataBrewClient::UpdateSchedule, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<GlueDataBrewEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-dataexchange/include/aws/dataexchange/DataExchangeClient.h b/generated/src/aws-cpp-sdk-dataexchange/include/aws/dataexchange/DataExchangeClient.h
index 9866f4904f74..10448532f616 100644
--- a/generated/src/aws-cpp-sdk-dataexchange/include/aws/dataexchange/DataExchangeClient.h
+++ b/generated/src/aws-cpp-sdk-dataexchange/include/aws/dataexchange/DataExchangeClient.h
@@ -1050,7 +1050,7 @@ class AWS_DATAEXCHANGE_API DataExchangeClient : public Aws::Client::AWSJsonClien
     return SubmitAsync(&DataExchangeClient::UpdateRevision, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<DataExchangeEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-datapipeline/include/aws/datapipeline/DataPipelineClient.h b/generated/src/aws-cpp-sdk-datapipeline/include/aws/datapipeline/DataPipelineClient.h
index e1606d61fe4d..ddcc9f5108c2 100644
--- a/generated/src/aws-cpp-sdk-datapipeline/include/aws/datapipeline/DataPipelineClient.h
+++ b/generated/src/aws-cpp-sdk-datapipeline/include/aws/datapipeline/DataPipelineClient.h
@@ -662,7 +662,7 @@ class AWS_DATAPIPELINE_API DataPipelineClient : public Aws::Client::AWSJsonClien
     return SubmitAsync(&DataPipelineClient::ValidatePipelineDefinition, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<DataPipelineEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-datasync/include/aws/datasync/DataSyncClient.h b/generated/src/aws-cpp-sdk-datasync/include/aws/datasync/DataSyncClient.h
index dfe1d0bdcaa4..b137440f634d 100644
--- a/generated/src/aws-cpp-sdk-datasync/include/aws/datasync/DataSyncClient.h
+++ b/generated/src/aws-cpp-sdk-datasync/include/aws/datasync/DataSyncClient.h
@@ -1683,7 +1683,7 @@ class AWS_DATASYNC_API DataSyncClient : public Aws::Client::AWSJsonClient,
     return SubmitAsync(&DataSyncClient::UpdateTaskExecution, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<DataSyncEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-datazone/include/aws/datazone/DataZoneClient.h b/generated/src/aws-cpp-sdk-datazone/include/aws/datazone/DataZoneClient.h
index 2c501f0cb080..95835851f537 100644
--- a/generated/src/aws-cpp-sdk-datazone/include/aws/datazone/DataZoneClient.h
+++ b/generated/src/aws-cpp-sdk-datazone/include/aws/datazone/DataZoneClient.h
@@ -5137,7 +5137,7 @@ class AWS_DATAZONE_API DataZoneClient : public Aws::Client::AWSJsonClient,
     return SubmitAsync(&DataZoneClient::UpdateUserProfile, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<DataZoneEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-dax/include/aws/dax/DAXClient.h b/generated/src/aws-cpp-sdk-dax/include/aws/dax/DAXClient.h
index 329bfd119d09..e79550da7226 100644
--- a/generated/src/aws-cpp-sdk-dax/include/aws/dax/DAXClient.h
+++ b/generated/src/aws-cpp-sdk-dax/include/aws/dax/DAXClient.h
@@ -669,7 +669,7 @@ class AWS_DAX_API DAXClient : public Aws::Client::AWSJsonClient, public Aws::Cli
     return SubmitAsync(&DAXClient::UpdateSubnetGroup, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<DAXEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-deadline/include/aws/deadline/DeadlineClient.h b/generated/src/aws-cpp-sdk-deadline/include/aws/deadline/DeadlineClient.h
index f9b83f0430fa..8d47e12fb842 100644
--- a/generated/src/aws-cpp-sdk-deadline/include/aws/deadline/DeadlineClient.h
+++ b/generated/src/aws-cpp-sdk-deadline/include/aws/deadline/DeadlineClient.h
@@ -3106,7 +3106,7 @@ class AWS_DEADLINE_API DeadlineClient : public Aws::Client::AWSJsonClient,
     return SubmitAsync(&DeadlineClient::UpdateWorkerSchedule, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<DeadlineEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-detective/include/aws/detective/DetectiveClient.h b/generated/src/aws-cpp-sdk-detective/include/aws/detective/DetectiveClient.h
index 6bfec94a310b..c55f2446d728 100644
--- a/generated/src/aws-cpp-sdk-detective/include/aws/detective/DetectiveClient.h
+++ b/generated/src/aws-cpp-sdk-detective/include/aws/detective/DetectiveClient.h
@@ -1016,7 +1016,7 @@ class AWS_DETECTIVE_API DetectiveClient : public Aws::Client::AWSJsonClient,
     return SubmitAsync(&DetectiveClient::UpdateOrganizationConfiguration, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<DetectiveEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-devicefarm/include/aws/devicefarm/DeviceFarmClient.h b/generated/src/aws-cpp-sdk-devicefarm/include/aws/devicefarm/DeviceFarmClient.h
index 1062edfc0f89..d379bff1002f 100644
--- a/generated/src/aws-cpp-sdk-devicefarm/include/aws/devicefarm/DeviceFarmClient.h
+++ b/generated/src/aws-cpp-sdk-devicefarm/include/aws/devicefarm/DeviceFarmClient.h
@@ -2194,7 +2194,7 @@ class AWS_DEVICEFARM_API DeviceFarmClient : public Aws::Client::AWSJsonClient,
     return SubmitAsync(&DeviceFarmClient::UpdateVPCEConfiguration, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<DeviceFarmEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-devops-guru/include/aws/devops-guru/DevOpsGuruClient.h b/generated/src/aws-cpp-sdk-devops-guru/include/aws/devops-guru/DevOpsGuruClient.h
index c7268b80503a..0cf39c107888 100644
--- a/generated/src/aws-cpp-sdk-devops-guru/include/aws/devops-guru/DevOpsGuruClient.h
+++ b/generated/src/aws-cpp-sdk-devops-guru/include/aws/devops-guru/DevOpsGuruClient.h
@@ -1031,7 +1031,7 @@ class AWS_DEVOPSGURU_API DevOpsGuruClient : public Aws::Client::AWSJsonClient,
     return SubmitAsync(&DevOpsGuruClient::UpdateServiceIntegration, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<DevOpsGuruEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-directconnect/include/aws/directconnect/DirectConnectClient.h b/generated/src/aws-cpp-sdk-directconnect/include/aws/directconnect/DirectConnectClient.h
index c3baf372d2a7..53cabcf81503 100644
--- a/generated/src/aws-cpp-sdk-directconnect/include/aws/directconnect/DirectConnectClient.h
+++ b/generated/src/aws-cpp-sdk-directconnect/include/aws/directconnect/DirectConnectClient.h
@@ -2031,7 +2031,7 @@ class AWS_DIRECTCONNECT_API DirectConnectClient : public Aws::Client::AWSJsonCli
     return SubmitAsync(&DirectConnectClient::UpdateVirtualInterfaceAttributes, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<DirectConnectEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-directory-service-data/include/aws/directory-service-data/DirectoryServiceDataClient.h b/generated/src/aws-cpp-sdk-directory-service-data/include/aws/directory-service-data/DirectoryServiceDataClient.h
index ca5fbc5918cf..afc314f51cee 100644
--- a/generated/src/aws-cpp-sdk-directory-service-data/include/aws/directory-service-data/DirectoryServiceDataClient.h
+++ b/generated/src/aws-cpp-sdk-directory-service-data/include/aws/directory-service-data/DirectoryServiceDataClient.h
@@ -596,7 +596,7 @@ class AWS_DIRECTORYSERVICEDATA_API DirectoryServiceDataClient
     return SubmitAsync(&DirectoryServiceDataClient::UpdateUser, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<DirectoryServiceDataEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-discovery/include/aws/discovery/ApplicationDiscoveryServiceClient.h b/generated/src/aws-cpp-sdk-discovery/include/aws/discovery/ApplicationDiscoveryServiceClient.h
index 8f04ad606180..abc40d68917d 100644
--- a/generated/src/aws-cpp-sdk-discovery/include/aws/discovery/ApplicationDiscoveryServiceClient.h
+++ b/generated/src/aws-cpp-sdk-discovery/include/aws/discovery/ApplicationDiscoveryServiceClient.h
@@ -942,7 +942,7 @@ class AWS_APPLICATIONDISCOVERYSERVICE_API ApplicationDiscoveryServiceClient
     return SubmitAsync(&ApplicationDiscoveryServiceClient::UpdateApplication, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<ApplicationDiscoveryServiceEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-dlm/include/aws/dlm/DLMClient.h b/generated/src/aws-cpp-sdk-dlm/include/aws/dlm/DLMClient.h
index 10a648589811..e8415a7c0295 100644
--- a/generated/src/aws-cpp-sdk-dlm/include/aws/dlm/DLMClient.h
+++ b/generated/src/aws-cpp-sdk-dlm/include/aws/dlm/DLMClient.h
@@ -306,7 +306,7 @@ class AWS_DLM_API DLMClient : public Aws::Client::AWSJsonClient, public Aws::Cli
     return SubmitAsync(&DLMClient::UpdateLifecyclePolicy, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<DLMEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-dms/include/aws/dms/DatabaseMigrationServiceClient.h b/generated/src/aws-cpp-sdk-dms/include/aws/dms/DatabaseMigrationServiceClient.h
index 1702a26ed031..2164e68f510c 100644
--- a/generated/src/aws-cpp-sdk-dms/include/aws/dms/DatabaseMigrationServiceClient.h
+++ b/generated/src/aws-cpp-sdk-dms/include/aws/dms/DatabaseMigrationServiceClient.h
@@ -3770,7 +3770,7 @@ class AWS_DATABASEMIGRATIONSERVICE_API DatabaseMigrationServiceClient
     return SubmitAsync(&DatabaseMigrationServiceClient::UpdateSubscriptionsToEventBridge, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<DatabaseMigrationServiceEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-docdb-elastic/include/aws/docdb-elastic/DocDBElasticClient.h b/generated/src/aws-cpp-sdk-docdb-elastic/include/aws/docdb-elastic/DocDBElasticClient.h
index 4c1d4c855583..8d3425c9600b 100644
--- a/generated/src/aws-cpp-sdk-docdb-elastic/include/aws/docdb-elastic/DocDBElasticClient.h
+++ b/generated/src/aws-cpp-sdk-docdb-elastic/include/aws/docdb-elastic/DocDBElasticClient.h
@@ -598,7 +598,7 @@ class AWS_DOCDBELASTIC_API DocDBElasticClient : public Aws::Client::AWSJsonClien
     return SubmitAsync(&DocDBElasticClient::UpdateCluster, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<DocDBElasticEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-docdb/include/aws/docdb/DocDBClient.h b/generated/src/aws-cpp-sdk-docdb/include/aws/docdb/DocDBClient.h
index 6ed9a6f1ee9e..b582f6b49392 100644
--- a/generated/src/aws-cpp-sdk-docdb/include/aws/docdb/DocDBClient.h
+++ b/generated/src/aws-cpp-sdk-docdb/include/aws/docdb/DocDBClient.h
@@ -1778,7 +1778,7 @@ class AWS_DOCDB_API DocDBClient : public Aws::Client::AWSXMLClient, public Aws::
     return SubmitAsync(&DocDBClient::SwitchoverGlobalCluster, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<DocDBEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-drs/include/aws/drs/DrsClient.h b/generated/src/aws-cpp-sdk-drs/include/aws/drs/DrsClient.h
index 3eda59e9ebdb..2fc57e56d585 100644
--- a/generated/src/aws-cpp-sdk-drs/include/aws/drs/DrsClient.h
+++ b/generated/src/aws-cpp-sdk-drs/include/aws/drs/DrsClient.h
@@ -1496,7 +1496,7 @@ class AWS_DRS_API DrsClient : public Aws::Client::AWSJsonClient, public Aws::Cli
     return SubmitAsync(&DrsClient::UpdateReplicationConfigurationTemplate, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<DrsEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-ds/include/aws/ds/DirectoryServiceClient.h b/generated/src/aws-cpp-sdk-ds/include/aws/ds/DirectoryServiceClient.h
index 35f29196f972..7dd4747a0558 100644
--- a/generated/src/aws-cpp-sdk-ds/include/aws/ds/DirectoryServiceClient.h
+++ b/generated/src/aws-cpp-sdk-ds/include/aws/ds/DirectoryServiceClient.h
@@ -2447,7 +2447,7 @@ class AWS_DIRECTORYSERVICE_API DirectoryServiceClient : public Aws::Client::AWSJ
     return SubmitAsync(&DirectoryServiceClient::VerifyTrust, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<DirectoryServiceEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-dsql/include/aws/dsql/DSQLClient.h b/generated/src/aws-cpp-sdk-dsql/include/aws/dsql/DSQLClient.h
index 70d05a2efb8d..f3f5512ddab4 100644
--- a/generated/src/aws-cpp-sdk-dsql/include/aws/dsql/DSQLClient.h
+++ b/generated/src/aws-cpp-sdk-dsql/include/aws/dsql/DSQLClient.h
@@ -458,7 +458,7 @@ class AWS_DSQL_API DSQLClient : public Aws::Client::AWSJsonClient, public Aws::C
   Aws::Utils::Outcome<String, DSQLError> GenerateDBConnectAdminAuthToken(const Aws::String& hostname, const Aws::String& region,
                                                                          long long expiresIn = 900);
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<DSQLEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-dynamodb/include/aws/dynamodb/DynamoDBClient.h b/generated/src/aws-cpp-sdk-dynamodb/include/aws/dynamodb/DynamoDBClient.h
index 873154dd938b..d4b74cc0d607 100644
--- a/generated/src/aws-cpp-sdk-dynamodb/include/aws/dynamodb/DynamoDBClient.h
+++ b/generated/src/aws-cpp-sdk-dynamodb/include/aws/dynamodb/DynamoDBClient.h
@@ -2338,7 +2338,7 @@ class AWS_DYNAMODB_API DynamoDBClient
     return SubmitAsync(&DynamoDBClient::UpdateTimeToLive, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<DynamoDBEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-dynamodbstreams/include/aws/dynamodbstreams/DynamoDBStreamsClient.h b/generated/src/aws-cpp-sdk-dynamodbstreams/include/aws/dynamodbstreams/DynamoDBStreamsClient.h
index ab8f3bc627e9..c3b242c36293 100644
--- a/generated/src/aws-cpp-sdk-dynamodbstreams/include/aws/dynamodbstreams/DynamoDBStreamsClient.h
+++ b/generated/src/aws-cpp-sdk-dynamodbstreams/include/aws/dynamodbstreams/DynamoDBStreamsClient.h
@@ -208,7 +208,7 @@ class AWS_DYNAMODBSTREAMS_API DynamoDBStreamsClient : public Aws::Client::AWSJso
     return SubmitAsync(&DynamoDBStreamsClient::ListStreams, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<DynamoDBStreamsEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-ebs/include/aws/ebs/EBSClient.h b/generated/src/aws-cpp-sdk-ebs/include/aws/ebs/EBSClient.h
index 91603adaf1ec..2dc596d3d74b 100644
--- a/generated/src/aws-cpp-sdk-ebs/include/aws/ebs/EBSClient.h
+++ b/generated/src/aws-cpp-sdk-ebs/include/aws/ebs/EBSClient.h
@@ -300,7 +300,7 @@ class AWS_EBS_API EBSClient : public Aws::Client::AWSJsonClient, public Aws::Cli
     return SubmitAsync(&EBSClient::StartSnapshot, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<EBSEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-ec2-instance-connect/include/aws/ec2-instance-connect/EC2InstanceConnectClient.h b/generated/src/aws-cpp-sdk-ec2-instance-connect/include/aws/ec2-instance-connect/EC2InstanceConnectClient.h
index 23dec17c791b..12b5f0f6646c 100644
--- a/generated/src/aws-cpp-sdk-ec2-instance-connect/include/aws/ec2-instance-connect/EC2InstanceConnectClient.h
+++ b/generated/src/aws-cpp-sdk-ec2-instance-connect/include/aws/ec2-instance-connect/EC2InstanceConnectClient.h
@@ -149,7 +149,7 @@ class AWS_EC2INSTANCECONNECT_API EC2InstanceConnectClient : public Aws::Client::
     return SubmitAsync(&EC2InstanceConnectClient::SendSerialConsoleSSHPublicKey, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<EC2InstanceConnectEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-ec2/include/aws/ec2/EC2Client.h b/generated/src/aws-cpp-sdk-ec2/include/aws/ec2/EC2Client.h
index 448f1a952f35..6f199aa29067 100644
--- a/generated/src/aws-cpp-sdk-ec2/include/aws/ec2/EC2Client.h
+++ b/generated/src/aws-cpp-sdk-ec2/include/aws/ec2/EC2Client.h
@@ -25235,7 +25235,7 @@ class AWS_EC2_API EC2Client : public Aws::Client::AWSXMLClient, public Aws::Clie
     return SubmitAsync(&EC2Client::WithdrawByoipCidr, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<EC2EndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-ecr-public/include/aws/ecr-public/ECRPublicClient.h b/generated/src/aws-cpp-sdk-ecr-public/include/aws/ecr-public/ECRPublicClient.h
index 3384042ee237..c9b5c2f4bccc 100644
--- a/generated/src/aws-cpp-sdk-ecr-public/include/aws/ecr-public/ECRPublicClient.h
+++ b/generated/src/aws-cpp-sdk-ecr-public/include/aws/ecr-public/ECRPublicClient.h
@@ -755,7 +755,7 @@ class AWS_ECRPUBLIC_API ECRPublicClient : public Aws::Client::AWSJsonClient,
     return SubmitAsync(&ECRPublicClient::UploadLayerPart, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<ECRPublicEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-ecr/include/aws/ecr/ECRClient.h b/generated/src/aws-cpp-sdk-ecr/include/aws/ecr/ECRClient.h
index cc594e9648c5..5c8e2ae7d4e3 100644
--- a/generated/src/aws-cpp-sdk-ecr/include/aws/ecr/ECRClient.h
+++ b/generated/src/aws-cpp-sdk-ecr/include/aws/ecr/ECRClient.h
@@ -1855,7 +1855,7 @@ class AWS_ECR_API ECRClient : public Aws::Client::AWSJsonClient, public Aws::Cli
     return SubmitAsync(&ECRClient::ValidatePullThroughCacheRule, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<ECREndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-ecs/include/aws/ecs/ECSClient.h b/generated/src/aws-cpp-sdk-ecs/include/aws/ecs/ECSClient.h
index 4c4e234d2ad8..29dc526b9fb8 100644
--- a/generated/src/aws-cpp-sdk-ecs/include/aws/ecs/ECSClient.h
+++ b/generated/src/aws-cpp-sdk-ecs/include/aws/ecs/ECSClient.h
@@ -2523,7 +2523,7 @@ class AWS_ECS_API ECSClient : public Aws::Client::AWSJsonClient, public Aws::Cli
     return SubmitAsync(&ECSClient::UpdateTaskSet, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<ECSEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-eks-auth/include/aws/eks-auth/EKSAuthClient.h b/generated/src/aws-cpp-sdk-eks-auth/include/aws/eks-auth/EKSAuthClient.h
index b6d62e8238f8..a4fc23ee452a 100644
--- a/generated/src/aws-cpp-sdk-eks-auth/include/aws/eks-auth/EKSAuthClient.h
+++ b/generated/src/aws-cpp-sdk-eks-auth/include/aws/eks-auth/EKSAuthClient.h
@@ -103,7 +103,7 @@ class AWS_EKSAUTH_API EKSAuthClient : public Aws::Client::AWSJsonClient, public
     return SubmitAsync(&EKSAuthClient::AssumeRoleForPodIdentity, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<EKSAuthEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-eks/include/aws/eks/EKSClient.h b/generated/src/aws-cpp-sdk-eks/include/aws/eks/EKSClient.h
index fa89fe5e3c81..9c23bef85acb 100644
--- a/generated/src/aws-cpp-sdk-eks/include/aws/eks/EKSClient.h
+++ b/generated/src/aws-cpp-sdk-eks/include/aws/eks/EKSClient.h
@@ -2169,7 +2169,7 @@ class AWS_EKS_API EKSClient : public Aws::Client::AWSJsonClient, public Aws::Cli
     return SubmitAsync(&EKSClient::UpdatePodIdentityAssociation, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<EKSEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-elasticache/include/aws/elasticache/ElastiCacheClient.h b/generated/src/aws-cpp-sdk-elasticache/include/aws/elasticache/ElastiCacheClient.h
index dbdbe2a071a2..03c6de9f6647 100644
--- a/generated/src/aws-cpp-sdk-elasticache/include/aws/elasticache/ElastiCacheClient.h
+++ b/generated/src/aws-cpp-sdk-elasticache/include/aws/elasticache/ElastiCacheClient.h
@@ -2496,7 +2496,7 @@ class AWS_ELASTICACHE_API ElastiCacheClient : public Aws::Client::AWSXMLClient,
     return SubmitAsync(&ElastiCacheClient::TestMigration, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<ElastiCacheEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-elasticbeanstalk/include/aws/elasticbeanstalk/ElasticBeanstalkClient.h b/generated/src/aws-cpp-sdk-elasticbeanstalk/include/aws/elasticbeanstalk/ElasticBeanstalkClient.h
index 39ff4eb554c4..4acc12c3d7bd 100644
--- a/generated/src/aws-cpp-sdk-elasticbeanstalk/include/aws/elasticbeanstalk/ElasticBeanstalkClient.h
+++ b/generated/src/aws-cpp-sdk-elasticbeanstalk/include/aws/elasticbeanstalk/ElasticBeanstalkClient.h
@@ -1552,7 +1552,7 @@ class AWS_ELASTICBEANSTALK_API ElasticBeanstalkClient : public Aws::Client::AWSX
     return SubmitAsync(&ElasticBeanstalkClient::ValidateConfigurationSettings, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<ElasticBeanstalkEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-elasticfilesystem/include/aws/elasticfilesystem/EFSClient.h b/generated/src/aws-cpp-sdk-elasticfilesystem/include/aws/elasticfilesystem/EFSClient.h
index e1eb54f7476c..0b7facb405b8 100644
--- a/generated/src/aws-cpp-sdk-elasticfilesystem/include/aws/elasticfilesystem/EFSClient.h
+++ b/generated/src/aws-cpp-sdk-elasticfilesystem/include/aws/elasticfilesystem/EFSClient.h
@@ -1200,7 +1200,7 @@ class AWS_EFS_API EFSClient : public Aws::Client::AWSJsonClient, public Aws::Cli
     return SubmitAsync(&EFSClient::UpdateFileSystemProtection, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<EFSEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-elasticloadbalancing/include/aws/elasticloadbalancing/ElasticLoadBalancingClient.h b/generated/src/aws-cpp-sdk-elasticloadbalancing/include/aws/elasticloadbalancing/ElasticLoadBalancingClient.h
index d53a1ff32136..5dc4a44ac91e 100644
--- a/generated/src/aws-cpp-sdk-elasticloadbalancing/include/aws/elasticloadbalancing/ElasticLoadBalancingClient.h
+++ b/generated/src/aws-cpp-sdk-elasticloadbalancing/include/aws/elasticloadbalancing/ElasticLoadBalancingClient.h
@@ -1106,7 +1106,7 @@ class AWS_ELASTICLOADBALANCING_API ElasticLoadBalancingClient
     return SubmitAsync(&ElasticLoadBalancingClient::SetLoadBalancerPoliciesOfListener, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<ElasticLoadBalancingEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-elasticloadbalancingv2/include/aws/elasticloadbalancingv2/ElasticLoadBalancingv2Client.h b/generated/src/aws-cpp-sdk-elasticloadbalancingv2/include/aws/elasticloadbalancingv2/ElasticLoadBalancingv2Client.h
index 186a824ffbc0..1ae022f5aa7c 100644
--- a/generated/src/aws-cpp-sdk-elasticloadbalancingv2/include/aws/elasticloadbalancingv2/ElasticLoadBalancingv2Client.h
+++ b/generated/src/aws-cpp-sdk-elasticloadbalancingv2/include/aws/elasticloadbalancingv2/ElasticLoadBalancingv2Client.h
@@ -1676,7 +1676,7 @@ class AWS_ELASTICLOADBALANCINGV2_API ElasticLoadBalancingv2Client
     return SubmitAsync(&ElasticLoadBalancingv2Client::SetSubnets, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<ElasticLoadBalancingv2EndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-elasticmapreduce/include/aws/elasticmapreduce/EMRClient.h b/generated/src/aws-cpp-sdk-elasticmapreduce/include/aws/elasticmapreduce/EMRClient.h
index 414262125ac4..74da5448dae8 100644
--- a/generated/src/aws-cpp-sdk-elasticmapreduce/include/aws/elasticmapreduce/EMRClient.h
+++ b/generated/src/aws-cpp-sdk-elasticmapreduce/include/aws/elasticmapreduce/EMRClient.h
@@ -1878,7 +1878,7 @@ class AWS_EMR_API EMRClient : public Aws::Client::AWSJsonClient, public Aws::Cli
     return SubmitAsync(&EMRClient::UpdateStudioSessionMapping, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<EMREndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-email/include/aws/email/SESClient.h b/generated/src/aws-cpp-sdk-email/include/aws/email/SESClient.h
index c7c024a56b18..c50dbc35515d 100644
--- a/generated/src/aws-cpp-sdk-email/include/aws/email/SESClient.h
+++ b/generated/src/aws-cpp-sdk-email/include/aws/email/SESClient.h
@@ -2575,7 +2575,7 @@ class AWS_SES_API SESClient : public Aws::Client::AWSXMLClient, public Aws::Clie
     return SubmitAsync(&SESClient::VerifyEmailIdentity, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<SESEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-emr-containers/include/aws/emr-containers/EMRContainersClient.h b/generated/src/aws-cpp-sdk-emr-containers/include/aws/emr-containers/EMRContainersClient.h
index 4f716636ac63..2829bc50f72b 100644
--- a/generated/src/aws-cpp-sdk-emr-containers/include/aws/emr-containers/EMRContainersClient.h
+++ b/generated/src/aws-cpp-sdk-emr-containers/include/aws/emr-containers/EMRContainersClient.h
@@ -777,7 +777,7 @@ class AWS_EMRCONTAINERS_API EMRContainersClient : public Aws::Client::AWSJsonCli
     return SubmitAsync(&EMRContainersClient::UntagResource, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<EMRContainersEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-emr-serverless/include/aws/emr-serverless/EMRServerlessClient.h b/generated/src/aws-cpp-sdk-emr-serverless/include/aws/emr-serverless/EMRServerlessClient.h
index e13d4d241137..685a982424da 100644
--- a/generated/src/aws-cpp-sdk-emr-serverless/include/aws/emr-serverless/EMRServerlessClient.h
+++ b/generated/src/aws-cpp-sdk-emr-serverless/include/aws/emr-serverless/EMRServerlessClient.h
@@ -518,7 +518,7 @@ class AWS_EMRSERVERLESS_API EMRServerlessClient : public Aws::Client::AWSJsonCli
     return SubmitAsync(&EMRServerlessClient::UpdateApplication, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<EMRServerlessEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-entityresolution/include/aws/entityresolution/EntityResolutionClient.h b/generated/src/aws-cpp-sdk-entityresolution/include/aws/entityresolution/EntityResolutionClient.h
index 4f88eb2329c1..447f3b59e5ba 100644
--- a/generated/src/aws-cpp-sdk-entityresolution/include/aws/entityresolution/EntityResolutionClient.h
+++ b/generated/src/aws-cpp-sdk-entityresolution/include/aws/entityresolution/EntityResolutionClient.h
@@ -1156,7 +1156,7 @@ class AWS_ENTITYRESOLUTION_API EntityResolutionClient : public Aws::Client::AWSJ
     return SubmitAsync(&EntityResolutionClient::UpdateSchemaMapping, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<EntityResolutionEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-es/include/aws/es/ElasticsearchServiceClient.h b/generated/src/aws-cpp-sdk-es/include/aws/es/ElasticsearchServiceClient.h
index 7f62fdb89aff..edcc7d255549 100644
--- a/generated/src/aws-cpp-sdk-es/include/aws/es/ElasticsearchServiceClient.h
+++ b/generated/src/aws-cpp-sdk-es/include/aws/es/ElasticsearchServiceClient.h
@@ -1570,7 +1570,7 @@ class AWS_ELASTICSEARCHSERVICE_API ElasticsearchServiceClient
     return SubmitAsync(&ElasticsearchServiceClient::UpgradeElasticsearchDomain, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<ElasticsearchServiceEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-eventbridge/include/aws/eventbridge/EventBridgeClient.h b/generated/src/aws-cpp-sdk-eventbridge/include/aws/eventbridge/EventBridgeClient.h
index 486301d3ba5e..43d53488749e 100644
--- a/generated/src/aws-cpp-sdk-eventbridge/include/aws/eventbridge/EventBridgeClient.h
+++ b/generated/src/aws-cpp-sdk-eventbridge/include/aws/eventbridge/EventBridgeClient.h
@@ -1925,7 +1925,7 @@ class AWS_EVENTBRIDGE_API EventBridgeClient : public Aws::Client::AWSJsonClient,
     return SubmitAsync(&EventBridgeClient::UpdateEventBus, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<EventBridgeEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-events/include/aws/events/CloudWatchEventsClient.h b/generated/src/aws-cpp-sdk-events/include/aws/events/CloudWatchEventsClient.h
index 1aa91a02b4d4..4c40a173af43 100644
--- a/generated/src/aws-cpp-sdk-events/include/aws/events/CloudWatchEventsClient.h
+++ b/generated/src/aws-cpp-sdk-events/include/aws/events/CloudWatchEventsClient.h
@@ -1716,7 +1716,7 @@ class AWS_CLOUDWATCHEVENTS_API CloudWatchEventsClient : public Aws::Client::AWSJ
     return SubmitAsync(&CloudWatchEventsClient::UpdateConnection, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<CloudWatchEventsEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-evs/include/aws/evs/EVSClient.h b/generated/src/aws-cpp-sdk-evs/include/aws/evs/EVSClient.h
index b9dee9e569cd..e2b4ec65599e 100644
--- a/generated/src/aws-cpp-sdk-evs/include/aws/evs/EVSClient.h
+++ b/generated/src/aws-cpp-sdk-evs/include/aws/evs/EVSClient.h
@@ -489,7 +489,7 @@ class AWS_EVS_API EVSClient : public Aws::Client::AWSJsonClient, public Aws::Cli
     return SubmitAsync(&EVSClient::UntagResource, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<EVSEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-finspace-data/include/aws/finspace-data/FinSpaceDataClient.h b/generated/src/aws-cpp-sdk-finspace-data/include/aws/finspace-data/FinSpaceDataClient.h
index 7dba3e791e74..8c63a14b5ad6 100644
--- a/generated/src/aws-cpp-sdk-finspace-data/include/aws/finspace-data/FinSpaceDataClient.h
+++ b/generated/src/aws-cpp-sdk-finspace-data/include/aws/finspace-data/FinSpaceDataClient.h
@@ -74,7 +74,7 @@ class AWS_FINSPACEDATA_API FinSpaceDataClient : public Aws::Client::AWSJsonClien
   /* End of legacy constructors due deprecation */
   virtual ~FinSpaceDataClient();
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<FinSpaceDataEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-finspace/include/aws/finspace/FinspaceClient.h b/generated/src/aws-cpp-sdk-finspace/include/aws/finspace/FinspaceClient.h
index cd52868ed2b8..ca6b7fcffb73 100644
--- a/generated/src/aws-cpp-sdk-finspace/include/aws/finspace/FinspaceClient.h
+++ b/generated/src/aws-cpp-sdk-finspace/include/aws/finspace/FinspaceClient.h
@@ -1278,7 +1278,7 @@ class AWS_FINSPACE_API FinspaceClient : public Aws::Client::AWSJsonClient,
     return SubmitAsync(&FinspaceClient::UpdateKxVolume, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<FinspaceEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-firehose/include/aws/firehose/FirehoseClient.h b/generated/src/aws-cpp-sdk-firehose/include/aws/firehose/FirehoseClient.h
index 526a786c0c2b..750feb28f797 100644
--- a/generated/src/aws-cpp-sdk-firehose/include/aws/firehose/FirehoseClient.h
+++ b/generated/src/aws-cpp-sdk-firehose/include/aws/firehose/FirehoseClient.h
@@ -696,7 +696,7 @@ class AWS_FIREHOSE_API FirehoseClient : public Aws::Client::AWSJsonClient,
     return SubmitAsync(&FirehoseClient::UpdateDestination, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<FirehoseEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-fis/include/aws/fis/FISClient.h b/generated/src/aws-cpp-sdk-fis/include/aws/fis/FISClient.h
index 5e3d19a6e2b3..43bcdcd1ecc9 100644
--- a/generated/src/aws-cpp-sdk-fis/include/aws/fis/FISClient.h
+++ b/generated/src/aws-cpp-sdk-fis/include/aws/fis/FISClient.h
@@ -806,7 +806,7 @@ class AWS_FIS_API FISClient : public Aws::Client::AWSJsonClient, public Aws::Cli
     return SubmitAsync(&FISClient::UpdateTargetAccountConfiguration, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<FISEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-fms/include/aws/fms/FMSClient.h b/generated/src/aws-cpp-sdk-fms/include/aws/fms/FMSClient.h
index 259a3f9cc607..2b28cd1995c6 100644
--- a/generated/src/aws-cpp-sdk-fms/include/aws/fms/FMSClient.h
+++ b/generated/src/aws-cpp-sdk-fms/include/aws/fms/FMSClient.h
@@ -1310,7 +1310,7 @@ class AWS_FMS_API FMSClient : public Aws::Client::AWSJsonClient, public Aws::Cli
     return SubmitAsync(&FMSClient::UntagResource, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<FMSEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-forecast/include/aws/forecast/ForecastServiceClient.h b/generated/src/aws-cpp-sdk-forecast/include/aws/forecast/ForecastServiceClient.h
index b31c2d612c44..4f3e7ee2417d 100644
--- a/generated/src/aws-cpp-sdk-forecast/include/aws/forecast/ForecastServiceClient.h
+++ b/generated/src/aws-cpp-sdk-forecast/include/aws/forecast/ForecastServiceClient.h
@@ -2263,7 +2263,7 @@ class AWS_FORECASTSERVICE_API ForecastServiceClient : public Aws::Client::AWSJso
     return SubmitAsync(&ForecastServiceClient::UpdateDatasetGroup, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<ForecastServiceEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-forecastquery/include/aws/forecastquery/ForecastQueryServiceClient.h b/generated/src/aws-cpp-sdk-forecastquery/include/aws/forecastquery/ForecastQueryServiceClient.h
index 295d57e5cc57..e6b2e46d7e08 100644
--- a/generated/src/aws-cpp-sdk-forecastquery/include/aws/forecastquery/ForecastQueryServiceClient.h
+++ b/generated/src/aws-cpp-sdk-forecastquery/include/aws/forecastquery/ForecastQueryServiceClient.h
@@ -138,7 +138,7 @@ class AWS_FORECASTQUERYSERVICE_API ForecastQueryServiceClient
     return SubmitAsync(&ForecastQueryServiceClient::QueryWhatIfForecast, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<ForecastQueryServiceEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-frauddetector/include/aws/frauddetector/FraudDetectorClient.h b/generated/src/aws-cpp-sdk-frauddetector/include/aws/frauddetector/FraudDetectorClient.h
index c9bdc9ef2a59..2733fc2e8f69 100644
--- a/generated/src/aws-cpp-sdk-frauddetector/include/aws/frauddetector/FraudDetectorClient.h
+++ b/generated/src/aws-cpp-sdk-frauddetector/include/aws/frauddetector/FraudDetectorClient.h
@@ -2174,7 +2174,7 @@ class AWS_FRAUDDETECTOR_API FraudDetectorClient : public Aws::Client::AWSJsonCli
     return SubmitAsync(&FraudDetectorClient::UpdateVariable, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<FraudDetectorEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-freetier/include/aws/freetier/FreeTierClient.h b/generated/src/aws-cpp-sdk-freetier/include/aws/freetier/FreeTierClient.h
index 4cb279e6caf9..653bdf925ec7 100644
--- a/generated/src/aws-cpp-sdk-freetier/include/aws/freetier/FreeTierClient.h
+++ b/generated/src/aws-cpp-sdk-freetier/include/aws/freetier/FreeTierClient.h
@@ -216,7 +216,7 @@ class AWS_FREETIER_API FreeTierClient : public Aws::Client::AWSJsonClient,
     return SubmitAsync(&FreeTierClient::UpgradeAccountPlan, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<FreeTierEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-fsx/include/aws/fsx/FSxClient.h b/generated/src/aws-cpp-sdk-fsx/include/aws/fsx/FSxClient.h
index 987db13db8ac..d7e8f10944ae 100644
--- a/generated/src/aws-cpp-sdk-fsx/include/aws/fsx/FSxClient.h
+++ b/generated/src/aws-cpp-sdk-fsx/include/aws/fsx/FSxClient.h
@@ -1901,7 +1901,7 @@ class AWS_FSX_API FSxClient : public Aws::Client::AWSJsonClient, public Aws::Cli
     return SubmitAsync(&FSxClient::UpdateVolume, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<FSxEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-gamelift/include/aws/gamelift/GameLiftClient.h b/generated/src/aws-cpp-sdk-gamelift/include/aws/gamelift/GameLiftClient.h
index e45df5300e88..16e49139f2c0 100644
--- a/generated/src/aws-cpp-sdk-gamelift/include/aws/gamelift/GameLiftClient.h
+++ b/generated/src/aws-cpp-sdk-gamelift/include/aws/gamelift/GameLiftClient.h
@@ -5307,7 +5307,7 @@ class AWS_GAMELIFT_API GameLiftClient : public Aws::Client::AWSJsonClient,
     return SubmitAsync(&GameLiftClient::ValidateMatchmakingRuleSet, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<GameLiftEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-gameliftstreams/include/aws/gameliftstreams/GameLiftStreamsClient.h b/generated/src/aws-cpp-sdk-gameliftstreams/include/aws/gameliftstreams/GameLiftStreamsClient.h
index e17520566f1d..b1d776010416 100644
--- a/generated/src/aws-cpp-sdk-gameliftstreams/include/aws/gameliftstreams/GameLiftStreamsClient.h
+++ b/generated/src/aws-cpp-sdk-gameliftstreams/include/aws/gameliftstreams/GameLiftStreamsClient.h
@@ -1025,7 +1025,7 @@ class AWS_GAMELIFTSTREAMS_API GameLiftStreamsClient : public Aws::Client::AWSJso
     return SubmitAsync(&GameLiftStreamsClient::UpdateStreamGroup, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<GameLiftStreamsEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-geo-maps/include/aws/geo-maps/GeoMapsClient.h b/generated/src/aws-cpp-sdk-geo-maps/include/aws/geo-maps/GeoMapsClient.h
index c50b0bd227a3..3b468e2bcdda 100644
--- a/generated/src/aws-cpp-sdk-geo-maps/include/aws/geo-maps/GeoMapsClient.h
+++ b/generated/src/aws-cpp-sdk-geo-maps/include/aws/geo-maps/GeoMapsClient.h
@@ -232,7 +232,7 @@ class AWS_GEOMAPS_API GeoMapsClient : public Aws::Client::AWSJsonClient, public
     return SubmitAsync(&GeoMapsClient::GetTile, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<GeoMapsEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-geo-places/include/aws/geo-places/GeoPlacesClient.h b/generated/src/aws-cpp-sdk-geo-places/include/aws/geo-places/GeoPlacesClient.h
index e26ad8296adc..45517c2d1736 100644
--- a/generated/src/aws-cpp-sdk-geo-places/include/aws/geo-places/GeoPlacesClient.h
+++ b/generated/src/aws-cpp-sdk-geo-places/include/aws/geo-places/GeoPlacesClient.h
@@ -315,7 +315,7 @@ class AWS_GEOPLACES_API GeoPlacesClient : public Aws::Client::AWSJsonClient,
     return SubmitAsync(&GeoPlacesClient::Suggest, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<GeoPlacesEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-geo-routes/include/aws/geo-routes/GeoRoutesClient.h b/generated/src/aws-cpp-sdk-geo-routes/include/aws/geo-routes/GeoRoutesClient.h
index 00c630b534e8..ac91da239c06 100644
--- a/generated/src/aws-cpp-sdk-geo-routes/include/aws/geo-routes/GeoRoutesClient.h
+++ b/generated/src/aws-cpp-sdk-geo-routes/include/aws/geo-routes/GeoRoutesClient.h
@@ -218,7 +218,7 @@ class AWS_GEOROUTES_API GeoRoutesClient : public Aws::Client::AWSJsonClient,
     return SubmitAsync(&GeoRoutesClient::SnapToRoads, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<GeoRoutesEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-glacier/include/aws/glacier/GlacierClient.h b/generated/src/aws-cpp-sdk-glacier/include/aws/glacier/GlacierClient.h
index bdcb6a6b439f..f54d7423334b 100644
--- a/generated/src/aws-cpp-sdk-glacier/include/aws/glacier/GlacierClient.h
+++ b/generated/src/aws-cpp-sdk-glacier/include/aws/glacier/GlacierClient.h
@@ -1535,7 +1535,7 @@ class AWS_GLACIER_API GlacierClient : public Aws::Client::AWSJsonClient, public
     return SubmitAsync(&GlacierClient::UploadMultipartPart, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<GlacierEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-globalaccelerator/include/aws/globalaccelerator/GlobalAcceleratorClient.h b/generated/src/aws-cpp-sdk-globalaccelerator/include/aws/globalaccelerator/GlobalAcceleratorClient.h
index 81491b3c819b..c44ecedcf6aa 100644
--- a/generated/src/aws-cpp-sdk-globalaccelerator/include/aws/globalaccelerator/GlobalAcceleratorClient.h
+++ b/generated/src/aws-cpp-sdk-globalaccelerator/include/aws/globalaccelerator/GlobalAcceleratorClient.h
@@ -1916,7 +1916,7 @@ class AWS_GLOBALACCELERATOR_API GlobalAcceleratorClient : public Aws::Client::AW
     return SubmitAsync(&GlobalAcceleratorClient::WithdrawByoipCidr, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<GlobalAcceleratorEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-glue/include/aws/glue/GlueClient.h b/generated/src/aws-cpp-sdk-glue/include/aws/glue/GlueClient.h
index f99a9a4ddfaa..53f940def207 100644
--- a/generated/src/aws-cpp-sdk-glue/include/aws/glue/GlueClient.h
+++ b/generated/src/aws-cpp-sdk-glue/include/aws/glue/GlueClient.h
@@ -7613,7 +7613,7 @@ class AWS_GLUE_API GlueClient : public Aws::Client::AWSJsonClient, public Aws::C
     return SubmitAsync(&GlueClient::UpdateWorkflow, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<GlueEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-grafana/include/aws/grafana/ManagedGrafanaClient.h b/generated/src/aws-cpp-sdk-grafana/include/aws/grafana/ManagedGrafanaClient.h
index 3de75df006a6..4cfd57566df6 100644
--- a/generated/src/aws-cpp-sdk-grafana/include/aws/grafana/ManagedGrafanaClient.h
+++ b/generated/src/aws-cpp-sdk-grafana/include/aws/grafana/ManagedGrafanaClient.h
@@ -854,7 +854,7 @@ class AWS_MANAGEDGRAFANA_API ManagedGrafanaClient : public Aws::Client::AWSJsonC
     return SubmitAsync(&ManagedGrafanaClient::UpdateWorkspaceConfiguration, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<ManagedGrafanaEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-greengrass/include/aws/greengrass/GreengrassClient.h b/generated/src/aws-cpp-sdk-greengrass/include/aws/greengrass/GreengrassClient.h
index a96e390e8b4c..eb3ab46f7222 100644
--- a/generated/src/aws-cpp-sdk-greengrass/include/aws/greengrass/GreengrassClient.h
+++ b/generated/src/aws-cpp-sdk-greengrass/include/aws/greengrass/GreengrassClient.h
@@ -2682,7 +2682,7 @@ class AWS_GREENGRASS_API GreengrassClient : public Aws::Client::AWSJsonClient,
     return SubmitAsync(&GreengrassClient::UpdateThingRuntimeConfiguration, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<GreengrassEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-greengrassv2/include/aws/greengrassv2/GreengrassV2Client.h b/generated/src/aws-cpp-sdk-greengrassv2/include/aws/greengrassv2/GreengrassV2Client.h
index 68a1c3fc1b99..a0ee4e7b05c7 100644
--- a/generated/src/aws-cpp-sdk-greengrassv2/include/aws/greengrassv2/GreengrassV2Client.h
+++ b/generated/src/aws-cpp-sdk-greengrassv2/include/aws/greengrassv2/GreengrassV2Client.h
@@ -1051,7 +1051,7 @@ class AWS_GREENGRASSV2_API GreengrassV2Client : public Aws::Client::AWSJsonClien
     return SubmitAsync(&GreengrassV2Client::UpdateConnectivityInfo, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<GreengrassV2EndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-groundstation/include/aws/groundstation/GroundStationClient.h b/generated/src/aws-cpp-sdk-groundstation/include/aws/groundstation/GroundStationClient.h
index a9178f9c498c..ea08aadb8ae7 100644
--- a/generated/src/aws-cpp-sdk-groundstation/include/aws/groundstation/GroundStationClient.h
+++ b/generated/src/aws-cpp-sdk-groundstation/include/aws/groundstation/GroundStationClient.h
@@ -1031,7 +1031,7 @@ class AWS_GROUNDSTATION_API GroundStationClient : public Aws::Client::AWSJsonCli
     return SubmitAsync(&GroundStationClient::UpdateMissionProfile, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<GroundStationEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-guardduty/include/aws/guardduty/GuardDutyClient.h b/generated/src/aws-cpp-sdk-guardduty/include/aws/guardduty/GuardDutyClient.h
index 07744884a602..0b9cc2272ab2 100644
--- a/generated/src/aws-cpp-sdk-guardduty/include/aws/guardduty/GuardDutyClient.h
+++ b/generated/src/aws-cpp-sdk-guardduty/include/aws/guardduty/GuardDutyClient.h
@@ -2673,7 +2673,7 @@ class AWS_GUARDDUTY_API GuardDutyClient : public Aws::Client::AWSJsonClient,
     return SubmitAsync(&GuardDutyClient::UpdateTrustedEntitySet, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<GuardDutyEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-health/include/aws/health/HealthClient.h b/generated/src/aws-cpp-sdk-health/include/aws/health/HealthClient.h
index 5fa355aed381..33ce03d6f734 100644
--- a/generated/src/aws-cpp-sdk-health/include/aws/health/HealthClient.h
+++ b/generated/src/aws-cpp-sdk-health/include/aws/health/HealthClient.h
@@ -679,7 +679,7 @@ class AWS_HEALTH_API HealthClient : public Aws::Client::AWSJsonClient, public Aw
     return SubmitAsync(&HealthClient::EnableHealthServiceAccessForOrganization, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<HealthEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-healthlake/include/aws/healthlake/HealthLakeClient.h b/generated/src/aws-cpp-sdk-healthlake/include/aws/healthlake/HealthLakeClient.h
index e548d9058206..be6377ea9dd9 100644
--- a/generated/src/aws-cpp-sdk-healthlake/include/aws/healthlake/HealthLakeClient.h
+++ b/generated/src/aws-cpp-sdk-healthlake/include/aws/healthlake/HealthLakeClient.h
@@ -424,7 +424,7 @@ class AWS_HEALTHLAKE_API HealthLakeClient : public Aws::Client::AWSJsonClient,
     return SubmitAsync(&HealthLakeClient::UntagResource, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<HealthLakeEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-iam/include/aws/iam/IAMClient.h b/generated/src/aws-cpp-sdk-iam/include/aws/iam/IAMClient.h
index f0dc51b345d6..a8ad57eacbd8 100644
--- a/generated/src/aws-cpp-sdk-iam/include/aws/iam/IAMClient.h
+++ b/generated/src/aws-cpp-sdk-iam/include/aws/iam/IAMClient.h
@@ -6726,7 +6726,7 @@ class AWS_IAM_API IAMClient : public Aws::Client::AWSXMLClient, public Aws::Clie
     return SubmitAsync(&IAMClient::UploadSigningCertificate, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<IAMEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-identitystore/include/aws/identitystore/IdentityStoreClient.h b/generated/src/aws-cpp-sdk-identitystore/include/aws/identitystore/IdentityStoreClient.h
index 1311219fe94f..b5e1b9f59577 100644
--- a/generated/src/aws-cpp-sdk-identitystore/include/aws/identitystore/IdentityStoreClient.h
+++ b/generated/src/aws-cpp-sdk-identitystore/include/aws/identitystore/IdentityStoreClient.h
@@ -646,7 +646,7 @@ class AWS_IDENTITYSTORE_API IdentityStoreClient : public Aws::Client::AWSJsonCli
     return SubmitAsync(&IdentityStoreClient::UpdateUser, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<IdentityStoreEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-imagebuilder/include/aws/imagebuilder/ImagebuilderClient.h b/generated/src/aws-cpp-sdk-imagebuilder/include/aws/imagebuilder/ImagebuilderClient.h
index 755a734f2865..dea99f28023e 100644
--- a/generated/src/aws-cpp-sdk-imagebuilder/include/aws/imagebuilder/ImagebuilderClient.h
+++ b/generated/src/aws-cpp-sdk-imagebuilder/include/aws/imagebuilder/ImagebuilderClient.h
@@ -2253,7 +2253,7 @@ class AWS_IMAGEBUILDER_API ImagebuilderClient : public Aws::Client::AWSJsonClien
     return SubmitAsync(&ImagebuilderClient::UpdateLifecyclePolicy, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<ImagebuilderEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-importexport/include/aws/importexport/ImportExportClient.h b/generated/src/aws-cpp-sdk-importexport/include/aws/importexport/ImportExportClient.h
index 61c3b20222ac..c0221fb1e57a 100644
--- a/generated/src/aws-cpp-sdk-importexport/include/aws/importexport/ImportExportClient.h
+++ b/generated/src/aws-cpp-sdk-importexport/include/aws/importexport/ImportExportClient.h
@@ -255,7 +255,7 @@ class AWS_IMPORTEXPORT_API ImportExportClient : public Aws::Client::AWSXMLClient
     return SubmitAsync(&ImportExportClient::UpdateJob, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<ImportExportEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-inspector-scan/include/aws/inspector-scan/InspectorscanClient.h b/generated/src/aws-cpp-sdk-inspector-scan/include/aws/inspector-scan/InspectorscanClient.h
index 0f84c42e6db2..5a579778e248 100644
--- a/generated/src/aws-cpp-sdk-inspector-scan/include/aws/inspector-scan/InspectorscanClient.h
+++ b/generated/src/aws-cpp-sdk-inspector-scan/include/aws/inspector-scan/InspectorscanClient.h
@@ -109,7 +109,7 @@ class AWS_INSPECTORSCAN_API InspectorscanClient : public Aws::Client::AWSJsonCli
     return SubmitAsync(&InspectorscanClient::ScanSbom, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<InspectorscanEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-inspector/include/aws/inspector/InspectorClient.h b/generated/src/aws-cpp-sdk-inspector/include/aws/inspector/InspectorClient.h
index 77bd90770890..f6df58e1e3be 100644
--- a/generated/src/aws-cpp-sdk-inspector/include/aws/inspector/InspectorClient.h
+++ b/generated/src/aws-cpp-sdk-inspector/include/aws/inspector/InspectorClient.h
@@ -1133,7 +1133,7 @@ class AWS_INSPECTOR_API InspectorClient : public Aws::Client::AWSJsonClient,
     return SubmitAsync(&InspectorClient::UpdateAssessmentTarget, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<InspectorEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-inspector2/include/aws/inspector2/Inspector2Client.h b/generated/src/aws-cpp-sdk-inspector2/include/aws/inspector2/Inspector2Client.h
index 8b023c92a707..b5d4a4e125fa 100644
--- a/generated/src/aws-cpp-sdk-inspector2/include/aws/inspector2/Inspector2Client.h
+++ b/generated/src/aws-cpp-sdk-inspector2/include/aws/inspector2/Inspector2Client.h
@@ -2208,7 +2208,7 @@ class AWS_INSPECTOR2_API Inspector2Client : public Aws::Client::AWSJsonClient,
     return SubmitAsync(&Inspector2Client::UpdateOrganizationConfiguration, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<Inspector2EndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-internetmonitor/include/aws/internetmonitor/InternetMonitorClient.h b/generated/src/aws-cpp-sdk-internetmonitor/include/aws/internetmonitor/InternetMonitorClient.h
index 9142a248f4c2..45e555e73588 100644
--- a/generated/src/aws-cpp-sdk-internetmonitor/include/aws/internetmonitor/InternetMonitorClient.h
+++ b/generated/src/aws-cpp-sdk-internetmonitor/include/aws/internetmonitor/InternetMonitorClient.h
@@ -596,7 +596,7 @@ class AWS_INTERNETMONITOR_API InternetMonitorClient : public Aws::Client::AWSJso
     return SubmitAsync(&InternetMonitorClient::UpdateMonitor, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<InternetMonitorEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-invoicing/include/aws/invoicing/InvoicingClient.h b/generated/src/aws-cpp-sdk-invoicing/include/aws/invoicing/InvoicingClient.h
index a3e3ed4e3e8a..c0dc9ae50ee1 100644
--- a/generated/src/aws-cpp-sdk-invoicing/include/aws/invoicing/InvoicingClient.h
+++ b/generated/src/aws-cpp-sdk-invoicing/include/aws/invoicing/InvoicingClient.h
@@ -600,7 +600,7 @@ class AWS_INVOICING_API InvoicingClient : public Aws::Client::AWSJsonClient,
     return SubmitAsync(&InvoicingClient::UpdateProcurementPortalPreferenceStatus, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<InvoicingEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-iot-data/include/aws/iot-data/IoTDataPlaneClient.h b/generated/src/aws-cpp-sdk-iot-data/include/aws/iot-data/IoTDataPlaneClient.h
index f64e8c184ea6..6fcf02b01f0d 100644
--- a/generated/src/aws-cpp-sdk-iot-data/include/aws/iot-data/IoTDataPlaneClient.h
+++ b/generated/src/aws-cpp-sdk-iot-data/include/aws/iot-data/IoTDataPlaneClient.h
@@ -341,7 +341,7 @@ class AWS_IOTDATAPLANE_API IoTDataPlaneClient : public Aws::Client::AWSJsonClien
     return SubmitAsync(&IoTDataPlaneClient::UpdateThingShadow, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<IoTDataPlaneEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-iot-jobs-data/include/aws/iot-jobs-data/IoTJobsDataPlaneClient.h b/generated/src/aws-cpp-sdk-iot-jobs-data/include/aws/iot-jobs-data/IoTJobsDataPlaneClient.h
index 91a70ed134f9..85b8db0adf89 100644
--- a/generated/src/aws-cpp-sdk-iot-jobs-data/include/aws/iot-jobs-data/IoTJobsDataPlaneClient.h
+++ b/generated/src/aws-cpp-sdk-iot-jobs-data/include/aws/iot-jobs-data/IoTJobsDataPlaneClient.h
@@ -239,7 +239,7 @@ class AWS_IOTJOBSDATAPLANE_API IoTJobsDataPlaneClient : public Aws::Client::AWSJ
     return SubmitAsync(&IoTJobsDataPlaneClient::UpdateJobExecution, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<IoTJobsDataPlaneEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-iot-managed-integrations/include/aws/iot-managed-integrations/IoTManagedIntegrationsClient.h b/generated/src/aws-cpp-sdk-iot-managed-integrations/include/aws/iot-managed-integrations/IoTManagedIntegrationsClient.h
index ead0d86c846c..6e6d74b52e4f 100644
--- a/generated/src/aws-cpp-sdk-iot-managed-integrations/include/aws/iot-managed-integrations/IoTManagedIntegrationsClient.h
+++ b/generated/src/aws-cpp-sdk-iot-managed-integrations/include/aws/iot-managed-integrations/IoTManagedIntegrationsClient.h
@@ -2430,7 +2430,7 @@ class AWS_IOTMANAGEDINTEGRATIONS_API IoTManagedIntegrationsClient
     return SubmitAsync(&IoTManagedIntegrationsClient::UpdateOtaTask, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<IoTManagedIntegrationsEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-iot/include/aws/iot/IoTClient.h b/generated/src/aws-cpp-sdk-iot/include/aws/iot/IoTClient.h
index 8dd053e91bdf..08ab610371ce 100644
--- a/generated/src/aws-cpp-sdk-iot/include/aws/iot/IoTClient.h
+++ b/generated/src/aws-cpp-sdk-iot/include/aws/iot/IoTClient.h
@@ -8240,7 +8240,7 @@ class AWS_IOT_API IoTClient : public Aws::Client::AWSJsonClient, public Aws::Cli
     return SubmitAsync(&IoTClient::ValidateSecurityProfileBehaviors, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<IoTEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-iotdeviceadvisor/include/aws/iotdeviceadvisor/IoTDeviceAdvisorClient.h b/generated/src/aws-cpp-sdk-iotdeviceadvisor/include/aws/iotdeviceadvisor/IoTDeviceAdvisorClient.h
index 92440e2f3f37..c7bc9dad111d 100644
--- a/generated/src/aws-cpp-sdk-iotdeviceadvisor/include/aws/iotdeviceadvisor/IoTDeviceAdvisorClient.h
+++ b/generated/src/aws-cpp-sdk-iotdeviceadvisor/include/aws/iotdeviceadvisor/IoTDeviceAdvisorClient.h
@@ -486,7 +486,7 @@ class AWS_IOTDEVICEADVISOR_API IoTDeviceAdvisorClient : public Aws::Client::AWSJ
     return SubmitAsync(&IoTDeviceAdvisorClient::UpdateSuiteDefinition, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<IoTDeviceAdvisorEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-iotevents-data/include/aws/iotevents-data/IoTEventsDataClient.h b/generated/src/aws-cpp-sdk-iotevents-data/include/aws/iotevents-data/IoTEventsDataClient.h
index 1c93f584db5c..1be6c17c706b 100644
--- a/generated/src/aws-cpp-sdk-iotevents-data/include/aws/iotevents-data/IoTEventsDataClient.h
+++ b/generated/src/aws-cpp-sdk-iotevents-data/include/aws/iotevents-data/IoTEventsDataClient.h
@@ -408,7 +408,7 @@ class AWS_IOTEVENTSDATA_API IoTEventsDataClient : public Aws::Client::AWSJsonCli
     return SubmitAsync(&IoTEventsDataClient::ListDetectors, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<IoTEventsDataEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-iotevents/include/aws/iotevents/IoTEventsClient.h b/generated/src/aws-cpp-sdk-iotevents/include/aws/iotevents/IoTEventsClient.h
index 6de71a818f1b..2808bec1a28c 100644
--- a/generated/src/aws-cpp-sdk-iotevents/include/aws/iotevents/IoTEventsClient.h
+++ b/generated/src/aws-cpp-sdk-iotevents/include/aws/iotevents/IoTEventsClient.h
@@ -794,7 +794,7 @@ class AWS_IOTEVENTS_API IoTEventsClient : public Aws::Client::AWSJsonClient,
     return SubmitAsync(&IoTEventsClient::UpdateInput, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<IoTEventsEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-iotfleetwise/include/aws/iotfleetwise/IoTFleetWiseClient.h b/generated/src/aws-cpp-sdk-iotfleetwise/include/aws/iotfleetwise/IoTFleetWiseClient.h
index 507bf38b280b..bb527db3e5cb 100644
--- a/generated/src/aws-cpp-sdk-iotfleetwise/include/aws/iotfleetwise/IoTFleetWiseClient.h
+++ b/generated/src/aws-cpp-sdk-iotfleetwise/include/aws/iotfleetwise/IoTFleetWiseClient.h
@@ -1748,7 +1748,7 @@ class AWS_IOTFLEETWISE_API IoTFleetWiseClient : public Aws::Client::AWSJsonClien
     return SubmitAsync(&IoTFleetWiseClient::UpdateVehicle, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<IoTFleetWiseEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-iotsecuretunneling/include/aws/iotsecuretunneling/IoTSecureTunnelingClient.h b/generated/src/aws-cpp-sdk-iotsecuretunneling/include/aws/iotsecuretunneling/IoTSecureTunnelingClient.h
index b5cd4e7070c8..a280807c06cb 100644
--- a/generated/src/aws-cpp-sdk-iotsecuretunneling/include/aws/iotsecuretunneling/IoTSecureTunnelingClient.h
+++ b/generated/src/aws-cpp-sdk-iotsecuretunneling/include/aws/iotsecuretunneling/IoTSecureTunnelingClient.h
@@ -308,7 +308,7 @@ class AWS_IOTSECURETUNNELING_API IoTSecureTunnelingClient : public Aws::Client::
     return SubmitAsync(&IoTSecureTunnelingClient::UntagResource, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<IoTSecureTunnelingEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-iotsitewise/include/aws/iotsitewise/IoTSiteWiseClient.h b/generated/src/aws-cpp-sdk-iotsitewise/include/aws/iotsitewise/IoTSiteWiseClient.h
index bb80edb35304..dbfb4edcca98 100644
--- a/generated/src/aws-cpp-sdk-iotsitewise/include/aws/iotsitewise/IoTSiteWiseClient.h
+++ b/generated/src/aws-cpp-sdk-iotsitewise/include/aws/iotsitewise/IoTSiteWiseClient.h
@@ -3202,7 +3202,7 @@ class AWS_IOTSITEWISE_API IoTSiteWiseClient : public Aws::Client::AWSJsonClient,
     return SubmitAsync(&IoTSiteWiseClient::UpdateProject, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<IoTSiteWiseEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-iotthingsgraph/include/aws/iotthingsgraph/IoTThingsGraphClient.h b/generated/src/aws-cpp-sdk-iotthingsgraph/include/aws/iotthingsgraph/IoTThingsGraphClient.h
index 610a4c0f8d9c..0a695ec7c061 100644
--- a/generated/src/aws-cpp-sdk-iotthingsgraph/include/aws/iotthingsgraph/IoTThingsGraphClient.h
+++ b/generated/src/aws-cpp-sdk-iotthingsgraph/include/aws/iotthingsgraph/IoTThingsGraphClient.h
@@ -83,7 +83,7 @@ class AWS_IOTTHINGSGRAPH_API IoTThingsGraphClient : public Aws::Client::AWSJsonC
   /* End of legacy constructors due deprecation */
   virtual ~IoTThingsGraphClient();
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<IoTThingsGraphEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-iottwinmaker/include/aws/iottwinmaker/IoTTwinMakerClient.h b/generated/src/aws-cpp-sdk-iottwinmaker/include/aws/iottwinmaker/IoTTwinMakerClient.h
index a8961ba8afaa..b79d372d34d2 100644
--- a/generated/src/aws-cpp-sdk-iottwinmaker/include/aws/iottwinmaker/IoTTwinMakerClient.h
+++ b/generated/src/aws-cpp-sdk-iottwinmaker/include/aws/iottwinmaker/IoTTwinMakerClient.h
@@ -1118,7 +1118,7 @@ class AWS_IOTTWINMAKER_API IoTTwinMakerClient : public Aws::Client::AWSJsonClien
     return SubmitAsync(&IoTTwinMakerClient::UpdateWorkspace, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<IoTTwinMakerEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-iotwireless/include/aws/iotwireless/IoTWirelessClient.h b/generated/src/aws-cpp-sdk-iotwireless/include/aws/iotwireless/IoTWirelessClient.h
index b4437248a99e..01b45dbd4143 100644
--- a/generated/src/aws-cpp-sdk-iotwireless/include/aws/iotwireless/IoTWirelessClient.h
+++ b/generated/src/aws-cpp-sdk-iotwireless/include/aws/iotwireless/IoTWirelessClient.h
@@ -3128,7 +3128,7 @@ class AWS_IOTWIRELESS_API IoTWirelessClient : public Aws::Client::AWSJsonClient,
     return SubmitAsync(&IoTWirelessClient::UpdateWirelessGateway, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<IoTWirelessEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-ivs-realtime/include/aws/ivs-realtime/IvsrealtimeClient.h b/generated/src/aws-cpp-sdk-ivs-realtime/include/aws/ivs-realtime/IvsrealtimeClient.h
index c694bb183ce9..02aec5182eb2 100644
--- a/generated/src/aws-cpp-sdk-ivs-realtime/include/aws/ivs-realtime/IvsrealtimeClient.h
+++ b/generated/src/aws-cpp-sdk-ivs-realtime/include/aws/ivs-realtime/IvsrealtimeClient.h
@@ -1212,7 +1212,7 @@ class AWS_IVSREALTIME_API IvsrealtimeClient : public Aws::Client::AWSJsonClient,
     return SubmitAsync(&IvsrealtimeClient::UpdateStage, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<IvsrealtimeEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-ivs/include/aws/ivs/IVSClient.h b/generated/src/aws-cpp-sdk-ivs/include/aws/ivs/IVSClient.h
index 6d5c45115f92..489157f46e00 100644
--- a/generated/src/aws-cpp-sdk-ivs/include/aws/ivs/IVSClient.h
+++ b/generated/src/aws-cpp-sdk-ivs/include/aws/ivs/IVSClient.h
@@ -1168,7 +1168,7 @@ class AWS_IVS_API IVSClient : public Aws::Client::AWSJsonClient, public Aws::Cli
     return SubmitAsync(&IVSClient::UpdatePlaybackRestrictionPolicy, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<IVSEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-ivschat/include/aws/ivschat/IvschatClient.h b/generated/src/aws-cpp-sdk-ivschat/include/aws/ivschat/IvschatClient.h
index 4090544e3e4c..a4a2288fa19f 100644
--- a/generated/src/aws-cpp-sdk-ivschat/include/aws/ivschat/IvschatClient.h
+++ b/generated/src/aws-cpp-sdk-ivschat/include/aws/ivschat/IvschatClient.h
@@ -619,7 +619,7 @@ class AWS_IVSCHAT_API IvschatClient : public Aws::Client::AWSJsonClient, public
     return SubmitAsync(&IvschatClient::UpdateRoom, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<IvschatEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-kafka/include/aws/kafka/KafkaClient.h b/generated/src/aws-cpp-sdk-kafka/include/aws/kafka/KafkaClient.h
index 28a29794bfd4..1b7b1f469bd3 100644
--- a/generated/src/aws-cpp-sdk-kafka/include/aws/kafka/KafkaClient.h
+++ b/generated/src/aws-cpp-sdk-kafka/include/aws/kafka/KafkaClient.h
@@ -1704,7 +1704,7 @@ class AWS_KAFKA_API KafkaClient : public Aws::Client::AWSJsonClient, public Aws:
     return SubmitAsync(&KafkaClient::UpdateStorage, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<KafkaEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-kafkaconnect/include/aws/kafkaconnect/KafkaConnectClient.h b/generated/src/aws-cpp-sdk-kafkaconnect/include/aws/kafkaconnect/KafkaConnectClient.h
index 4a9a45ad245d..0ae904e267d5 100644
--- a/generated/src/aws-cpp-sdk-kafkaconnect/include/aws/kafkaconnect/KafkaConnectClient.h
+++ b/generated/src/aws-cpp-sdk-kafkaconnect/include/aws/kafkaconnect/KafkaConnectClient.h
@@ -566,7 +566,7 @@ class AWS_KAFKACONNECT_API KafkaConnectClient : public Aws::Client::AWSJsonClien
     return SubmitAsync(&KafkaConnectClient::UpdateConnector, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<KafkaConnectEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-kendra-ranking/include/aws/kendra-ranking/KendraRankingClient.h b/generated/src/aws-cpp-sdk-kendra-ranking/include/aws/kendra-ranking/KendraRankingClient.h
index e35578d2fc12..9b26ac7e1a23 100644
--- a/generated/src/aws-cpp-sdk-kendra-ranking/include/aws/kendra-ranking/KendraRankingClient.h
+++ b/generated/src/aws-cpp-sdk-kendra-ranking/include/aws/kendra-ranking/KendraRankingClient.h
@@ -350,7 +350,7 @@ class AWS_KENDRARANKING_API KendraRankingClient : public Aws::Client::AWSJsonCli
     return SubmitAsync(&KendraRankingClient::UpdateRescoreExecutionPlan, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<KendraRankingEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-kendra/include/aws/kendra/KendraClient.h b/generated/src/aws-cpp-sdk-kendra/include/aws/kendra/KendraClient.h
index 2dc80369f5ee..86a755e3dfe6 100644
--- a/generated/src/aws-cpp-sdk-kendra/include/aws/kendra/KendraClient.h
+++ b/generated/src/aws-cpp-sdk-kendra/include/aws/kendra/KendraClient.h
@@ -2202,7 +2202,7 @@ class AWS_KENDRA_API KendraClient : public Aws::Client::AWSJsonClient, public Aw
     return SubmitAsync(&KendraClient::UpdateThesaurus, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<KendraEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-keyspaces/include/aws/keyspaces/KeyspacesClient.h b/generated/src/aws-cpp-sdk-keyspaces/include/aws/keyspaces/KeyspacesClient.h
index 703bf4dbb908..3257b8d1471c 100644
--- a/generated/src/aws-cpp-sdk-keyspaces/include/aws/keyspaces/KeyspacesClient.h
+++ b/generated/src/aws-cpp-sdk-keyspaces/include/aws/keyspaces/KeyspacesClient.h
@@ -733,7 +733,7 @@ class AWS_KEYSPACES_API KeyspacesClient : public Aws::Client::AWSJsonClient,
     return SubmitAsync(&KeyspacesClient::UpdateTable, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<KeyspacesEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-keyspacesstreams/include/aws/keyspacesstreams/KeyspacesStreamsClient.h b/generated/src/aws-cpp-sdk-keyspacesstreams/include/aws/keyspacesstreams/KeyspacesStreamsClient.h
index 37aca1a036bf..0599551b4efa 100644
--- a/generated/src/aws-cpp-sdk-keyspacesstreams/include/aws/keyspacesstreams/KeyspacesStreamsClient.h
+++ b/generated/src/aws-cpp-sdk-keyspacesstreams/include/aws/keyspacesstreams/KeyspacesStreamsClient.h
@@ -215,7 +215,7 @@ class AWS_KEYSPACESSTREAMS_API KeyspacesStreamsClient : public Aws::Client::AWSJ
     return SubmitAsync(&KeyspacesStreamsClient::ListStreams, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<KeyspacesStreamsEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-kinesis-video-archived-media/include/aws/kinesis-video-archived-media/KinesisVideoArchivedMediaClient.h b/generated/src/aws-cpp-sdk-kinesis-video-archived-media/include/aws/kinesis-video-archived-media/KinesisVideoArchivedMediaClient.h
index e08cfb344def..0b30a4a855e4 100644
--- a/generated/src/aws-cpp-sdk-kinesis-video-archived-media/include/aws/kinesis-video-archived-media/KinesisVideoArchivedMediaClient.h
+++ b/generated/src/aws-cpp-sdk-kinesis-video-archived-media/include/aws/kinesis-video-archived-media/KinesisVideoArchivedMediaClient.h
@@ -542,7 +542,7 @@ class AWS_KINESISVIDEOARCHIVEDMEDIA_API KinesisVideoArchivedMediaClient
     return SubmitAsync(&KinesisVideoArchivedMediaClient::ListFragments, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<KinesisVideoArchivedMediaEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-kinesis-video-media/include/aws/kinesis-video-media/KinesisVideoMediaClient.h b/generated/src/aws-cpp-sdk-kinesis-video-media/include/aws/kinesis-video-media/KinesisVideoMediaClient.h
index 38a13f6e64a1..57ce1789cecd 100644
--- a/generated/src/aws-cpp-sdk-kinesis-video-media/include/aws/kinesis-video-media/KinesisVideoMediaClient.h
+++ b/generated/src/aws-cpp-sdk-kinesis-video-media/include/aws/kinesis-video-media/KinesisVideoMediaClient.h
@@ -131,7 +131,7 @@ class AWS_KINESISVIDEOMEDIA_API KinesisVideoMediaClient : public Aws::Client::AW
     return SubmitAsync(&KinesisVideoMediaClient::GetMedia, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<KinesisVideoMediaEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-kinesis-video-signaling/include/aws/kinesis-video-signaling/KinesisVideoSignalingChannelsClient.h b/generated/src/aws-cpp-sdk-kinesis-video-signaling/include/aws/kinesis-video-signaling/KinesisVideoSignalingChannelsClient.h
index 9b79d785a772..2906784f419c 100644
--- a/generated/src/aws-cpp-sdk-kinesis-video-signaling/include/aws/kinesis-video-signaling/KinesisVideoSignalingChannelsClient.h
+++ b/generated/src/aws-cpp-sdk-kinesis-video-signaling/include/aws/kinesis-video-signaling/KinesisVideoSignalingChannelsClient.h
@@ -156,7 +156,7 @@ class AWS_KINESISVIDEOSIGNALINGCHANNELS_API KinesisVideoSignalingChannelsClient
     return SubmitAsync(&KinesisVideoSignalingChannelsClient::SendAlexaOfferToMaster, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<KinesisVideoSignalingChannelsEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-kinesis-video-webrtc-storage/include/aws/kinesis-video-webrtc-storage/KinesisVideoWebRTCStorageClient.h b/generated/src/aws-cpp-sdk-kinesis-video-webrtc-storage/include/aws/kinesis-video-webrtc-storage/KinesisVideoWebRTCStorageClient.h
index 655a9ea83a72..25b267e450c7 100644
--- a/generated/src/aws-cpp-sdk-kinesis-video-webrtc-storage/include/aws/kinesis-video-webrtc-storage/KinesisVideoWebRTCStorageClient.h
+++ b/generated/src/aws-cpp-sdk-kinesis-video-webrtc-storage/include/aws/kinesis-video-webrtc-storage/KinesisVideoWebRTCStorageClient.h
@@ -176,7 +176,7 @@ class AWS_KINESISVIDEOWEBRTCSTORAGE_API KinesisVideoWebRTCStorageClient
     return SubmitAsync(&KinesisVideoWebRTCStorageClient::JoinStorageSessionAsViewer, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<KinesisVideoWebRTCStorageEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-kinesis/include/aws/kinesis/KinesisClient.h b/generated/src/aws-cpp-sdk-kinesis/include/aws/kinesis/KinesisClient.h
index 064e443a6379..8c1c23c11b0e 100644
--- a/generated/src/aws-cpp-sdk-kinesis/include/aws/kinesis/KinesisClient.h
+++ b/generated/src/aws-cpp-sdk-kinesis/include/aws/kinesis/KinesisClient.h
@@ -1770,7 +1770,7 @@ class AWS_KINESIS_API KinesisClient : public Aws::Client::AWSJsonClient, public
     return SubmitAsync(&KinesisClient::UpdateStreamWarmThroughput, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<KinesisEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-kinesisanalytics/include/aws/kinesisanalytics/KinesisAnalyticsClient.h b/generated/src/aws-cpp-sdk-kinesisanalytics/include/aws/kinesisanalytics/KinesisAnalyticsClient.h
index 24134d4f396b..830146ba8865 100644
--- a/generated/src/aws-cpp-sdk-kinesisanalytics/include/aws/kinesisanalytics/KinesisAnalyticsClient.h
+++ b/generated/src/aws-cpp-sdk-kinesisanalytics/include/aws/kinesisanalytics/KinesisAnalyticsClient.h
@@ -859,7 +859,7 @@ class AWS_KINESISANALYTICS_API KinesisAnalyticsClient : public Aws::Client::AWSJ
     return SubmitAsync(&KinesisAnalyticsClient::UpdateApplication, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<KinesisAnalyticsEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-kinesisanalyticsv2/include/aws/kinesisanalyticsv2/KinesisAnalyticsV2Client.h b/generated/src/aws-cpp-sdk-kinesisanalyticsv2/include/aws/kinesisanalyticsv2/KinesisAnalyticsV2Client.h
index c9b842710f55..3bb319cf87c7 100644
--- a/generated/src/aws-cpp-sdk-kinesisanalyticsv2/include/aws/kinesisanalyticsv2/KinesisAnalyticsV2Client.h
+++ b/generated/src/aws-cpp-sdk-kinesisanalyticsv2/include/aws/kinesisanalyticsv2/KinesisAnalyticsV2Client.h
@@ -1132,7 +1132,7 @@ class AWS_KINESISANALYTICSV2_API KinesisAnalyticsV2Client : public Aws::Client::
     return SubmitAsync(&KinesisAnalyticsV2Client::UpdateApplicationMaintenanceConfiguration, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<KinesisAnalyticsV2EndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-kinesisvideo/include/aws/kinesisvideo/KinesisVideoClient.h b/generated/src/aws-cpp-sdk-kinesisvideo/include/aws/kinesisvideo/KinesisVideoClient.h
index 6be5b718dcf0..8062a3c60d6a 100644
--- a/generated/src/aws-cpp-sdk-kinesisvideo/include/aws/kinesisvideo/KinesisVideoClient.h
+++ b/generated/src/aws-cpp-sdk-kinesisvideo/include/aws/kinesisvideo/KinesisVideoClient.h
@@ -1103,7 +1103,7 @@ class AWS_KINESISVIDEO_API KinesisVideoClient : public Aws::Client::AWSJsonClien
     return SubmitAsync(&KinesisVideoClient::UpdateStreamStorageConfiguration, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<KinesisVideoEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-kms/include/aws/kms/KMSClient.h b/generated/src/aws-cpp-sdk-kms/include/aws/kms/KMSClient.h
index 29b2ae46ee14..e4746de57eab 100644
--- a/generated/src/aws-cpp-sdk-kms/include/aws/kms/KMSClient.h
+++ b/generated/src/aws-cpp-sdk-kms/include/aws/kms/KMSClient.h
@@ -3840,7 +3840,7 @@ class AWS_KMS_API KMSClient : public Aws::Client::AWSJsonClient, public Aws::Cli
     return SubmitAsync(&KMSClient::VerifyMac, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<KMSEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-lakeformation/include/aws/lakeformation/LakeFormationClient.h b/generated/src/aws-cpp-sdk-lakeformation/include/aws/lakeformation/LakeFormationClient.h
index ba7de73d5b1a..6ae78128b682 100644
--- a/generated/src/aws-cpp-sdk-lakeformation/include/aws/lakeformation/LakeFormationClient.h
+++ b/generated/src/aws-cpp-sdk-lakeformation/include/aws/lakeformation/LakeFormationClient.h
@@ -1881,7 +1881,7 @@ class AWS_LAKEFORMATION_API LakeFormationClient : public Aws::Client::AWSJsonCli
     return SubmitAsync(&LakeFormationClient::UpdateTableStorageOptimizer, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<LakeFormationEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-lambda/include/aws/lambda/LambdaClient.h b/generated/src/aws-cpp-sdk-lambda/include/aws/lambda/LambdaClient.h
index e91c27968111..c47f95d99f04 100644
--- a/generated/src/aws-cpp-sdk-lambda/include/aws/lambda/LambdaClient.h
+++ b/generated/src/aws-cpp-sdk-lambda/include/aws/lambda/LambdaClient.h
@@ -2912,7 +2912,7 @@ class AWS_LAMBDA_API LambdaClient : public Aws::Client::AWSJsonClient, public Aw
     return SubmitAsync(&LambdaClient::UpdateFunctionUrlConfig, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<LambdaEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-launch-wizard/include/aws/launch-wizard/LaunchWizardClient.h b/generated/src/aws-cpp-sdk-launch-wizard/include/aws/launch-wizard/LaunchWizardClient.h
index 5b5babf6ec08..b32471a51e0c 100644
--- a/generated/src/aws-cpp-sdk-launch-wizard/include/aws/launch-wizard/LaunchWizardClient.h
+++ b/generated/src/aws-cpp-sdk-launch-wizard/include/aws/launch-wizard/LaunchWizardClient.h
@@ -493,7 +493,7 @@ class AWS_LAUNCHWIZARD_API LaunchWizardClient : public Aws::Client::AWSJsonClien
     return SubmitAsync(&LaunchWizardClient::UpdateDeployment, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<LaunchWizardEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-lex-models/include/aws/lex-models/LexModelBuildingServiceClient.h b/generated/src/aws-cpp-sdk-lex-models/include/aws/lex-models/LexModelBuildingServiceClient.h
index d427bff1382f..1fc50f646e5f 100644
--- a/generated/src/aws-cpp-sdk-lex-models/include/aws/lex-models/LexModelBuildingServiceClient.h
+++ b/generated/src/aws-cpp-sdk-lex-models/include/aws/lex-models/LexModelBuildingServiceClient.h
@@ -1416,7 +1416,7 @@ class AWS_LEXMODELBUILDINGSERVICE_API LexModelBuildingServiceClient
     return SubmitAsync(&LexModelBuildingServiceClient::UntagResource, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<LexModelBuildingServiceEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-lex/include/aws/lex/LexRuntimeServiceClient.h b/generated/src/aws-cpp-sdk-lex/include/aws/lex/LexRuntimeServiceClient.h
index a7dc82ac9d42..4e7d7f9a89c9 100644
--- a/generated/src/aws-cpp-sdk-lex/include/aws/lex/LexRuntimeServiceClient.h
+++ b/generated/src/aws-cpp-sdk-lex/include/aws/lex/LexRuntimeServiceClient.h
@@ -289,7 +289,7 @@ class AWS_LEXRUNTIMESERVICE_API LexRuntimeServiceClient : public Aws::Client::AW
     return SubmitAsync(&LexRuntimeServiceClient::PutSession, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<LexRuntimeServiceEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-lexv2-models/include/aws/lexv2-models/LexModelsV2Client.h b/generated/src/aws-cpp-sdk-lexv2-models/include/aws/lexv2-models/LexModelsV2Client.h
index eea99489a3e7..bbef5e981363 100644
--- a/generated/src/aws-cpp-sdk-lexv2-models/include/aws/lexv2-models/LexModelsV2Client.h
+++ b/generated/src/aws-cpp-sdk-lexv2-models/include/aws/lexv2-models/LexModelsV2Client.h
@@ -3034,7 +3034,7 @@ class AWS_LEXMODELSV2_API LexModelsV2Client : public Aws::Client::AWSJsonClient,
     return SubmitAsync(&LexModelsV2Client::UpdateTestSet, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<LexModelsV2EndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-lexv2-runtime/include/aws/lexv2-runtime/LexRuntimeV2Client.h b/generated/src/aws-cpp-sdk-lexv2-runtime/include/aws/lexv2-runtime/LexRuntimeV2Client.h
index 37ab35bc4484..0da67d3427df 100644
--- a/generated/src/aws-cpp-sdk-lexv2-runtime/include/aws/lexv2-runtime/LexRuntimeV2Client.h
+++ b/generated/src/aws-cpp-sdk-lexv2-runtime/include/aws/lexv2-runtime/LexRuntimeV2Client.h
@@ -308,7 +308,7 @@ class AWS_LEXRUNTIMEV2_API LexRuntimeV2Client : public Aws::Client::AWSJsonClien
                                       const StartConversationResponseReceivedHandler& handler,
                                       const std::shared_ptr<const Aws::Client::AsyncCallerContext>& handlerContext = nullptr) const;
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<LexRuntimeV2EndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-license-manager-linux-subscriptions/include/aws/license-manager-linux-subscriptions/LicenseManagerLinuxSubscriptionsClient.h b/generated/src/aws-cpp-sdk-license-manager-linux-subscriptions/include/aws/license-manager-linux-subscriptions/LicenseManagerLinuxSubscriptionsClient.h
index b2b385d682bf..6bd2fa1361df 100644
--- a/generated/src/aws-cpp-sdk-license-manager-linux-subscriptions/include/aws/license-manager-linux-subscriptions/LicenseManagerLinuxSubscriptionsClient.h
+++ b/generated/src/aws-cpp-sdk-license-manager-linux-subscriptions/include/aws/license-manager-linux-subscriptions/LicenseManagerLinuxSubscriptionsClient.h
@@ -394,7 +394,7 @@ class AWS_LICENSEMANAGERLINUXSUBSCRIPTIONS_API LicenseManagerLinuxSubscriptionsC
     return SubmitAsync(&LicenseManagerLinuxSubscriptionsClient::UpdateServiceSettings, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<LicenseManagerLinuxSubscriptionsEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-license-manager-user-subscriptions/include/aws/license-manager-user-subscriptions/LicenseManagerUserSubscriptionsClient.h b/generated/src/aws-cpp-sdk-license-manager-user-subscriptions/include/aws/license-manager-user-subscriptions/LicenseManagerUserSubscriptionsClient.h
index 465b3efba7cc..03f5b4028614 100644
--- a/generated/src/aws-cpp-sdk-license-manager-user-subscriptions/include/aws/license-manager-user-subscriptions/LicenseManagerUserSubscriptionsClient.h
+++ b/generated/src/aws-cpp-sdk-license-manager-user-subscriptions/include/aws/license-manager-user-subscriptions/LicenseManagerUserSubscriptionsClient.h
@@ -568,7 +568,7 @@ class AWS_LICENSEMANAGERUSERSUBSCRIPTIONS_API LicenseManagerUserSubscriptionsCli
     return SubmitAsync(&LicenseManagerUserSubscriptionsClient::UpdateIdentityProviderSettings, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<LicenseManagerUserSubscriptionsEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-license-manager/include/aws/license-manager/LicenseManagerClient.h b/generated/src/aws-cpp-sdk-license-manager/include/aws/license-manager/LicenseManagerClient.h
index 2b1629844f64..91622f17c3b0 100644
--- a/generated/src/aws-cpp-sdk-license-manager/include/aws/license-manager/LicenseManagerClient.h
+++ b/generated/src/aws-cpp-sdk-license-manager/include/aws/license-manager/LicenseManagerClient.h
@@ -1823,7 +1823,7 @@ class AWS_LICENSEMANAGER_API LicenseManagerClient : public Aws::Client::AWSJsonC
     return SubmitAsync(&LicenseManagerClient::UpdateServiceSettings, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<LicenseManagerEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-lightsail/include/aws/lightsail/LightsailClient.h b/generated/src/aws-cpp-sdk-lightsail/include/aws/lightsail/LightsailClient.h
index 59e05eecd4ac..976b096a6253 100644
--- a/generated/src/aws-cpp-sdk-lightsail/include/aws/lightsail/LightsailClient.h
+++ b/generated/src/aws-cpp-sdk-lightsail/include/aws/lightsail/LightsailClient.h
@@ -5166,7 +5166,7 @@ class AWS_LIGHTSAIL_API LightsailClient : public Aws::Client::AWSJsonClient,
     return SubmitAsync(&LightsailClient::UpdateRelationalDatabaseParameters, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<LightsailEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-location/include/aws/location/LocationServiceClient.h b/generated/src/aws-cpp-sdk-location/include/aws/location/LocationServiceClient.h
index d10977e2f0d8..b3c9da385451 100644
--- a/generated/src/aws-cpp-sdk-location/include/aws/location/LocationServiceClient.h
+++ b/generated/src/aws-cpp-sdk-location/include/aws/location/LocationServiceClient.h
@@ -2318,7 +2318,7 @@ class AWS_LOCATIONSERVICE_API LocationServiceClient : public Aws::Client::AWSJso
     return SubmitAsync(&LocationServiceClient::VerifyDevicePosition, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<LocationServiceEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-logs/include/aws/logs/CloudWatchLogsClient.h b/generated/src/aws-cpp-sdk-logs/include/aws/logs/CloudWatchLogsClient.h
index 2f025e8390ea..89ec6c36fd95 100644
--- a/generated/src/aws-cpp-sdk-logs/include/aws/logs/CloudWatchLogsClient.h
+++ b/generated/src/aws-cpp-sdk-logs/include/aws/logs/CloudWatchLogsClient.h
@@ -4136,7 +4136,7 @@ class AWS_CLOUDWATCHLOGS_API CloudWatchLogsClient : public Aws::Client::AWSJsonC
     return SubmitAsync(&CloudWatchLogsClient::UpdateScheduledQuery, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<CloudWatchLogsEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-lookoutequipment/include/aws/lookoutequipment/LookoutEquipmentClient.h b/generated/src/aws-cpp-sdk-lookoutequipment/include/aws/lookoutequipment/LookoutEquipmentClient.h
index 22e3dc5311cf..2b769e608801 100644
--- a/generated/src/aws-cpp-sdk-lookoutequipment/include/aws/lookoutequipment/LookoutEquipmentClient.h
+++ b/generated/src/aws-cpp-sdk-lookoutequipment/include/aws/lookoutequipment/LookoutEquipmentClient.h
@@ -1425,7 +1425,7 @@ class AWS_LOOKOUTEQUIPMENT_API LookoutEquipmentClient : public Aws::Client::AWSJ
     return SubmitAsync(&LookoutEquipmentClient::UpdateRetrainingScheduler, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<LookoutEquipmentEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-m2/include/aws/m2/MainframeModernizationClient.h b/generated/src/aws-cpp-sdk-m2/include/aws/m2/MainframeModernizationClient.h
index 982636a2319a..182d724d0e49 100644
--- a/generated/src/aws-cpp-sdk-m2/include/aws/m2/MainframeModernizationClient.h
+++ b/generated/src/aws-cpp-sdk-m2/include/aws/m2/MainframeModernizationClient.h
@@ -1097,7 +1097,7 @@ class AWS_MAINFRAMEMODERNIZATION_API MainframeModernizationClient
     return SubmitAsync(&MainframeModernizationClient::UpdateEnvironment, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<MainframeModernizationEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-machinelearning/include/aws/machinelearning/MachineLearningClient.h b/generated/src/aws-cpp-sdk-machinelearning/include/aws/machinelearning/MachineLearningClient.h
index a071b5b6a46d..b5036d7d9a3a 100644
--- a/generated/src/aws-cpp-sdk-machinelearning/include/aws/machinelearning/MachineLearningClient.h
+++ b/generated/src/aws-cpp-sdk-machinelearning/include/aws/machinelearning/MachineLearningClient.h
@@ -985,7 +985,7 @@ class AWS_MACHINELEARNING_API MachineLearningClient : public Aws::Client::AWSJso
     return SubmitAsync(&MachineLearningClient::UpdateMLModel, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<MachineLearningEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-macie2/include/aws/macie2/Macie2Client.h b/generated/src/aws-cpp-sdk-macie2/include/aws/macie2/Macie2Client.h
index 2e9b60a249ea..fdf7dd20b415 100644
--- a/generated/src/aws-cpp-sdk-macie2/include/aws/macie2/Macie2Client.h
+++ b/generated/src/aws-cpp-sdk-macie2/include/aws/macie2/Macie2Client.h
@@ -2353,7 +2353,7 @@ class AWS_MACIE2_API Macie2Client : public Aws::Client::AWSJsonClient, public Aw
     return SubmitAsync(&Macie2Client::UpdateSensitivityInspectionTemplate, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<Macie2EndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-mailmanager/include/aws/mailmanager/MailManagerClient.h b/generated/src/aws-cpp-sdk-mailmanager/include/aws/mailmanager/MailManagerClient.h
index e76b61de9fb8..01c219fc381f 100644
--- a/generated/src/aws-cpp-sdk-mailmanager/include/aws/mailmanager/MailManagerClient.h
+++ b/generated/src/aws-cpp-sdk-mailmanager/include/aws/mailmanager/MailManagerClient.h
@@ -1685,7 +1685,7 @@ class AWS_MAILMANAGER_API MailManagerClient : public Aws::Client::AWSJsonClient,
     return SubmitAsync(&MailManagerClient::UpdateTrafficPolicy, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<MailManagerEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-managedblockchain-query/include/aws/managedblockchain-query/ManagedBlockchainQueryClient.h b/generated/src/aws-cpp-sdk-managedblockchain-query/include/aws/managedblockchain-query/ManagedBlockchainQueryClient.h
index 245fc1361376..c35e61a294e4 100644
--- a/generated/src/aws-cpp-sdk-managedblockchain-query/include/aws/managedblockchain-query/ManagedBlockchainQueryClient.h
+++ b/generated/src/aws-cpp-sdk-managedblockchain-query/include/aws/managedblockchain-query/ManagedBlockchainQueryClient.h
@@ -350,7 +350,7 @@ class AWS_MANAGEDBLOCKCHAINQUERY_API ManagedBlockchainQueryClient
     return SubmitAsync(&ManagedBlockchainQueryClient::ListTransactions, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<ManagedBlockchainQueryEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-managedblockchain/include/aws/managedblockchain/ManagedBlockchainClient.h b/generated/src/aws-cpp-sdk-managedblockchain/include/aws/managedblockchain/ManagedBlockchainClient.h
index ab695f8535e1..1fce282e63f6 100644
--- a/generated/src/aws-cpp-sdk-managedblockchain/include/aws/managedblockchain/ManagedBlockchainClient.h
+++ b/generated/src/aws-cpp-sdk-managedblockchain/include/aws/managedblockchain/ManagedBlockchainClient.h
@@ -845,7 +845,7 @@ class AWS_MANAGEDBLOCKCHAIN_API ManagedBlockchainClient : public Aws::Client::AW
     return SubmitAsync(&ManagedBlockchainClient::VoteOnProposal, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<ManagedBlockchainEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-marketplace-agreement/include/aws/marketplace-agreement/AgreementServiceClient.h b/generated/src/aws-cpp-sdk-marketplace-agreement/include/aws/marketplace-agreement/AgreementServiceClient.h
index f8b1bfec0f1f..6cfa1cb157ee 100644
--- a/generated/src/aws-cpp-sdk-marketplace-agreement/include/aws/marketplace-agreement/AgreementServiceClient.h
+++ b/generated/src/aws-cpp-sdk-marketplace-agreement/include/aws/marketplace-agreement/AgreementServiceClient.h
@@ -238,7 +238,7 @@ class AWS_AGREEMENTSERVICE_API AgreementServiceClient : public Aws::Client::AWSJ
     return SubmitAsync(&AgreementServiceClient::SearchAgreements, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<AgreementServiceEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-marketplace-catalog/include/aws/marketplace-catalog/MarketplaceCatalogClient.h b/generated/src/aws-cpp-sdk-marketplace-catalog/include/aws/marketplace-catalog/MarketplaceCatalogClient.h
index 717fe2708bb4..f5167754b8d7 100644
--- a/generated/src/aws-cpp-sdk-marketplace-catalog/include/aws/marketplace-catalog/MarketplaceCatalogClient.h
+++ b/generated/src/aws-cpp-sdk-marketplace-catalog/include/aws/marketplace-catalog/MarketplaceCatalogClient.h
@@ -461,7 +461,7 @@ class AWS_MARKETPLACECATALOG_API MarketplaceCatalogClient : public Aws::Client::
     return SubmitAsync(&MarketplaceCatalogClient::UntagResource, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<MarketplaceCatalogEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-marketplace-deployment/include/aws/marketplace-deployment/MarketplaceDeploymentClient.h b/generated/src/aws-cpp-sdk-marketplace-deployment/include/aws/marketplace-deployment/MarketplaceDeploymentClient.h
index 3ed15baf0ad1..1f4cf9bff853 100644
--- a/generated/src/aws-cpp-sdk-marketplace-deployment/include/aws/marketplace-deployment/MarketplaceDeploymentClient.h
+++ b/generated/src/aws-cpp-sdk-marketplace-deployment/include/aws/marketplace-deployment/MarketplaceDeploymentClient.h
@@ -186,7 +186,7 @@ class AWS_MARKETPLACEDEPLOYMENT_API MarketplaceDeploymentClient
     return SubmitAsync(&MarketplaceDeploymentClient::UntagResource, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<MarketplaceDeploymentEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-marketplace-entitlement/include/aws/marketplace-entitlement/MarketplaceEntitlementServiceClient.h b/generated/src/aws-cpp-sdk-marketplace-entitlement/include/aws/marketplace-entitlement/MarketplaceEntitlementServiceClient.h
index 439332db4f6a..dbe61c54ecf5 100644
--- a/generated/src/aws-cpp-sdk-marketplace-entitlement/include/aws/marketplace-entitlement/MarketplaceEntitlementServiceClient.h
+++ b/generated/src/aws-cpp-sdk-marketplace-entitlement/include/aws/marketplace-entitlement/MarketplaceEntitlementServiceClient.h
@@ -119,7 +119,7 @@ class AWS_MARKETPLACEENTITLEMENTSERVICE_API MarketplaceEntitlementServiceClient
     return SubmitAsync(&MarketplaceEntitlementServiceClient::GetEntitlements, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<MarketplaceEntitlementServiceEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-marketplace-reporting/include/aws/marketplace-reporting/MarketplaceReportingClient.h b/generated/src/aws-cpp-sdk-marketplace-reporting/include/aws/marketplace-reporting/MarketplaceReportingClient.h
index 25e8425969f1..c5288ab7cfee 100644
--- a/generated/src/aws-cpp-sdk-marketplace-reporting/include/aws/marketplace-reporting/MarketplaceReportingClient.h
+++ b/generated/src/aws-cpp-sdk-marketplace-reporting/include/aws/marketplace-reporting/MarketplaceReportingClient.h
@@ -161,7 +161,7 @@ class AWS_MARKETPLACEREPORTING_API MarketplaceReportingClient
     return SubmitAsync(&MarketplaceReportingClient::GetBuyerDashboard, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<MarketplaceReportingEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-marketplacecommerceanalytics/include/aws/marketplacecommerceanalytics/MarketplaceCommerceAnalyticsClient.h b/generated/src/aws-cpp-sdk-marketplacecommerceanalytics/include/aws/marketplacecommerceanalytics/MarketplaceCommerceAnalyticsClient.h
index 2727a7242866..f311837a7d83 100644
--- a/generated/src/aws-cpp-sdk-marketplacecommerceanalytics/include/aws/marketplacecommerceanalytics/MarketplaceCommerceAnalyticsClient.h
+++ b/generated/src/aws-cpp-sdk-marketplacecommerceanalytics/include/aws/marketplacecommerceanalytics/MarketplaceCommerceAnalyticsClient.h
@@ -115,7 +115,7 @@ class AWS_MARKETPLACECOMMERCEANALYTICS_API MarketplaceCommerceAnalyticsClient
     return SubmitAsync(&MarketplaceCommerceAnalyticsClient::GenerateDataSet, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<MarketplaceCommerceAnalyticsEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-mediaconnect/include/aws/mediaconnect/MediaConnectClient.h b/generated/src/aws-cpp-sdk-mediaconnect/include/aws/mediaconnect/MediaConnectClient.h
index ecb122bb64cc..f4fdeeca078a 100644
--- a/generated/src/aws-cpp-sdk-mediaconnect/include/aws/mediaconnect/MediaConnectClient.h
+++ b/generated/src/aws-cpp-sdk-mediaconnect/include/aws/mediaconnect/MediaConnectClient.h
@@ -2360,7 +2360,7 @@ class AWS_MEDIACONNECT_API MediaConnectClient : public Aws::Client::AWSJsonClien
     return SubmitAsync(&MediaConnectClient::UpdateRouterOutput, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<MediaConnectEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-mediaconvert/include/aws/mediaconvert/MediaConvertClient.h b/generated/src/aws-cpp-sdk-mediaconvert/include/aws/mediaconvert/MediaConvertClient.h
index 82f3232e72e9..f625f75a8374 100644
--- a/generated/src/aws-cpp-sdk-mediaconvert/include/aws/mediaconvert/MediaConvertClient.h
+++ b/generated/src/aws-cpp-sdk-mediaconvert/include/aws/mediaconvert/MediaConvertClient.h
@@ -966,7 +966,7 @@ class AWS_MEDIACONVERT_API MediaConvertClient : public Aws::Client::AWSJsonClien
     return SubmitAsync(&MediaConvertClient::UpdateQueue, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<MediaConvertEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-medialive/include/aws/medialive/MediaLiveClient.h b/generated/src/aws-cpp-sdk-medialive/include/aws/medialive/MediaLiveClient.h
index 2e0aa071b9d8..a436a807b15b 100644
--- a/generated/src/aws-cpp-sdk-medialive/include/aws/medialive/MediaLiveClient.h
+++ b/generated/src/aws-cpp-sdk-medialive/include/aws/medialive/MediaLiveClient.h
@@ -3423,7 +3423,7 @@ class AWS_MEDIALIVE_API MediaLiveClient : public Aws::Client::AWSJsonClient,
     return SubmitAsync(&MediaLiveClient::UpdateSdiSource, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<MediaLiveEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-mediapackage-vod/include/aws/mediapackage-vod/MediaPackageVodClient.h b/generated/src/aws-cpp-sdk-mediapackage-vod/include/aws/mediapackage-vod/MediaPackageVodClient.h
index dd507f208cfe..da1d81c614aa 100644
--- a/generated/src/aws-cpp-sdk-mediapackage-vod/include/aws/mediapackage-vod/MediaPackageVodClient.h
+++ b/generated/src/aws-cpp-sdk-mediapackage-vod/include/aws/mediapackage-vod/MediaPackageVodClient.h
@@ -539,7 +539,7 @@ class AWS_MEDIAPACKAGEVOD_API MediaPackageVodClient : public Aws::Client::AWSJso
     return SubmitAsync(&MediaPackageVodClient::UpdatePackagingGroup, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<MediaPackageVodEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-mediapackage/include/aws/mediapackage/MediaPackageClient.h b/generated/src/aws-cpp-sdk-mediapackage/include/aws/mediapackage/MediaPackageClient.h
index 31440930e200..59dc9bdccf67 100644
--- a/generated/src/aws-cpp-sdk-mediapackage/include/aws/mediapackage/MediaPackageClient.h
+++ b/generated/src/aws-cpp-sdk-mediapackage/include/aws/mediapackage/MediaPackageClient.h
@@ -536,7 +536,7 @@ class AWS_MEDIAPACKAGE_API MediaPackageClient : public Aws::Client::AWSJsonClien
     return SubmitAsync(&MediaPackageClient::UpdateOriginEndpoint, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<MediaPackageEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-mediapackagev2/include/aws/mediapackagev2/Mediapackagev2Client.h b/generated/src/aws-cpp-sdk-mediapackagev2/include/aws/mediapackagev2/Mediapackagev2Client.h
index bce88ff6625a..7a41bd85454a 100644
--- a/generated/src/aws-cpp-sdk-mediapackagev2/include/aws/mediapackagev2/Mediapackagev2Client.h
+++ b/generated/src/aws-cpp-sdk-mediapackagev2/include/aws/mediapackagev2/Mediapackagev2Client.h
@@ -942,7 +942,7 @@ class AWS_MEDIAPACKAGEV2_API Mediapackagev2Client : public Aws::Client::AWSJsonC
     return SubmitAsync(&Mediapackagev2Client::UpdateOriginEndpoint, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<Mediapackagev2EndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-mediastore-data/include/aws/mediastore-data/MediaStoreDataClient.h b/generated/src/aws-cpp-sdk-mediastore-data/include/aws/mediastore-data/MediaStoreDataClient.h
index 48c8d5a11ef0..d19aea2ca9d8 100644
--- a/generated/src/aws-cpp-sdk-mediastore-data/include/aws/mediastore-data/MediaStoreDataClient.h
+++ b/generated/src/aws-cpp-sdk-mediastore-data/include/aws/mediastore-data/MediaStoreDataClient.h
@@ -210,7 +210,7 @@ class AWS_MEDIASTOREDATA_API MediaStoreDataClient : public Aws::Client::AWSJsonC
     return SubmitAsync(&MediaStoreDataClient::PutObject, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<MediaStoreDataEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-mediastore/include/aws/mediastore/MediaStoreClient.h b/generated/src/aws-cpp-sdk-mediastore/include/aws/mediastore/MediaStoreClient.h
index 0a6b1f6af5e0..7ff28bf2b8e0 100644
--- a/generated/src/aws-cpp-sdk-mediastore/include/aws/mediastore/MediaStoreClient.h
+++ b/generated/src/aws-cpp-sdk-mediastore/include/aws/mediastore/MediaStoreClient.h
@@ -691,7 +691,7 @@ class AWS_MEDIASTORE_API MediaStoreClient : public Aws::Client::AWSJsonClient,
     return SubmitAsync(&MediaStoreClient::UntagResource, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<MediaStoreEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-mediatailor/include/aws/mediatailor/MediaTailorClient.h b/generated/src/aws-cpp-sdk-mediatailor/include/aws/mediatailor/MediaTailorClient.h
index 20113d5ff337..17715c6fa993 100644
--- a/generated/src/aws-cpp-sdk-mediatailor/include/aws/mediatailor/MediaTailorClient.h
+++ b/generated/src/aws-cpp-sdk-mediatailor/include/aws/mediatailor/MediaTailorClient.h
@@ -1321,7 +1321,7 @@ class AWS_MEDIATAILOR_API MediaTailorClient : public Aws::Client::AWSJsonClient,
     return SubmitAsync(&MediaTailorClient::UpdateVodSource, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<MediaTailorEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-medical-imaging/include/aws/medical-imaging/MedicalImagingClient.h b/generated/src/aws-cpp-sdk-medical-imaging/include/aws/medical-imaging/MedicalImagingClient.h
index d09911de6cb5..20616fff8b1a 100644
--- a/generated/src/aws-cpp-sdk-medical-imaging/include/aws/medical-imaging/MedicalImagingClient.h
+++ b/generated/src/aws-cpp-sdk-medical-imaging/include/aws/medical-imaging/MedicalImagingClient.h
@@ -560,7 +560,7 @@ class AWS_MEDICALIMAGING_API MedicalImagingClient : public Aws::Client::AWSJsonC
     return SubmitAsync(&MedicalImagingClient::UpdateImageSetMetadata, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<MedicalImagingEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-memorydb/include/aws/memorydb/MemoryDBClient.h b/generated/src/aws-cpp-sdk-memorydb/include/aws/memorydb/MemoryDBClient.h
index 471a14609580..e5eb802f4941 100644
--- a/generated/src/aws-cpp-sdk-memorydb/include/aws/memorydb/MemoryDBClient.h
+++ b/generated/src/aws-cpp-sdk-memorydb/include/aws/memorydb/MemoryDBClient.h
@@ -1374,7 +1374,7 @@ class AWS_MEMORYDB_API MemoryDBClient : public Aws::Client::AWSJsonClient,
     return SubmitAsync(&MemoryDBClient::UpdateUser, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<MemoryDBEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-meteringmarketplace/include/aws/meteringmarketplace/MarketplaceMeteringClient.h b/generated/src/aws-cpp-sdk-meteringmarketplace/include/aws/meteringmarketplace/MarketplaceMeteringClient.h
index bb08748b20ae..be7d347dba31 100644
--- a/generated/src/aws-cpp-sdk-meteringmarketplace/include/aws/meteringmarketplace/MarketplaceMeteringClient.h
+++ b/generated/src/aws-cpp-sdk-meteringmarketplace/include/aws/meteringmarketplace/MarketplaceMeteringClient.h
@@ -378,7 +378,7 @@ class AWS_MARKETPLACEMETERING_API MarketplaceMeteringClient
     return SubmitAsync(&MarketplaceMeteringClient::ResolveCustomer, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<MarketplaceMeteringEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-mgn/include/aws/mgn/MgnClient.h b/generated/src/aws-cpp-sdk-mgn/include/aws/mgn/MgnClient.h
index cdeb0ba58273..f91d5a5cb3fc 100644
--- a/generated/src/aws-cpp-sdk-mgn/include/aws/mgn/MgnClient.h
+++ b/generated/src/aws-cpp-sdk-mgn/include/aws/mgn/MgnClient.h
@@ -1989,7 +1989,7 @@ class AWS_MGN_API MgnClient : public Aws::Client::AWSJsonClient, public Aws::Cli
     return SubmitAsync(&MgnClient::UpdateWave, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<MgnEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-migration-hub-refactor-spaces/include/aws/migration-hub-refactor-spaces/MigrationHubRefactorSpacesClient.h b/generated/src/aws-cpp-sdk-migration-hub-refactor-spaces/include/aws/migration-hub-refactor-spaces/MigrationHubRefactorSpacesClient.h
index f85bda600bb2..b7e03f714ea5 100644
--- a/generated/src/aws-cpp-sdk-migration-hub-refactor-spaces/include/aws/migration-hub-refactor-spaces/MigrationHubRefactorSpacesClient.h
+++ b/generated/src/aws-cpp-sdk-migration-hub-refactor-spaces/include/aws/migration-hub-refactor-spaces/MigrationHubRefactorSpacesClient.h
@@ -838,7 +838,7 @@ class AWS_MIGRATIONHUBREFACTORSPACES_API MigrationHubRefactorSpacesClient
     return SubmitAsync(&MigrationHubRefactorSpacesClient::UpdateRoute, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<MigrationHubRefactorSpacesEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-migrationhub-config/include/aws/migrationhub-config/MigrationHubConfigClient.h b/generated/src/aws-cpp-sdk-migrationhub-config/include/aws/migrationhub-config/MigrationHubConfigClient.h
index f1c8ff70402c..36c9a5e0cb03 100644
--- a/generated/src/aws-cpp-sdk-migrationhub-config/include/aws/migrationhub-config/MigrationHubConfigClient.h
+++ b/generated/src/aws-cpp-sdk-migrationhub-config/include/aws/migrationhub-config/MigrationHubConfigClient.h
@@ -204,7 +204,7 @@ class AWS_MIGRATIONHUBCONFIG_API MigrationHubConfigClient : public Aws::Client::
     return SubmitAsync(&MigrationHubConfigClient::GetHomeRegion, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<MigrationHubConfigEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-migrationhuborchestrator/include/aws/migrationhuborchestrator/MigrationHubOrchestratorClient.h b/generated/src/aws-cpp-sdk-migrationhuborchestrator/include/aws/migrationhuborchestrator/MigrationHubOrchestratorClient.h
index 1150e91296b3..293749890396 100644
--- a/generated/src/aws-cpp-sdk-migrationhuborchestrator/include/aws/migrationhuborchestrator/MigrationHubOrchestratorClient.h
+++ b/generated/src/aws-cpp-sdk-migrationhuborchestrator/include/aws/migrationhuborchestrator/MigrationHubOrchestratorClient.h
@@ -883,7 +883,7 @@ class AWS_MIGRATIONHUBORCHESTRATOR_API MigrationHubOrchestratorClient
     return SubmitAsync(&MigrationHubOrchestratorClient::UpdateWorkflowStepGroup, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<MigrationHubOrchestratorEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-migrationhubstrategy/include/aws/migrationhubstrategy/MigrationHubStrategyRecommendationsClient.h b/generated/src/aws-cpp-sdk-migrationhubstrategy/include/aws/migrationhubstrategy/MigrationHubStrategyRecommendationsClient.h
index a2e0d7aa6d85..b58b95fc1e54 100644
--- a/generated/src/aws-cpp-sdk-migrationhubstrategy/include/aws/migrationhubstrategy/MigrationHubStrategyRecommendationsClient.h
+++ b/generated/src/aws-cpp-sdk-migrationhubstrategy/include/aws/migrationhubstrategy/MigrationHubStrategyRecommendationsClient.h
@@ -700,7 +700,7 @@ class AWS_MIGRATIONHUBSTRATEGYRECOMMENDATIONS_API MigrationHubStrategyRecommenda
     return SubmitAsync(&MigrationHubStrategyRecommendationsClient::UpdateServerConfig, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<MigrationHubStrategyRecommendationsEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-monitoring/include/aws/monitoring/CloudWatchClient.h b/generated/src/aws-cpp-sdk-monitoring/include/aws/monitoring/CloudWatchClient.h
index bc7f6a6a34d4..8950d3d62786 100644
--- a/generated/src/aws-cpp-sdk-monitoring/include/aws/monitoring/CloudWatchClient.h
+++ b/generated/src/aws-cpp-sdk-monitoring/include/aws/monitoring/CloudWatchClient.h
@@ -1541,7 +1541,7 @@ class AWS_CLOUDWATCH_API CloudWatchClient : public Aws::Client::AWSRpcV2CborClie
     return SubmitAsync(&CloudWatchClient::UntagResource, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<CloudWatchEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-mpa/include/aws/mpa/MPAClient.h b/generated/src/aws-cpp-sdk-mpa/include/aws/mpa/MPAClient.h
index fd619e17f81c..5518ff6594f7 100644
--- a/generated/src/aws-cpp-sdk-mpa/include/aws/mpa/MPAClient.h
+++ b/generated/src/aws-cpp-sdk-mpa/include/aws/mpa/MPAClient.h
@@ -670,7 +670,7 @@ class AWS_MPA_API MPAClient : public Aws::Client::AWSJsonClient, public Aws::Cli
     return SubmitAsync(&MPAClient::UpdateApprovalTeam, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<MPAEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-mq/include/aws/mq/MQClient.h b/generated/src/aws-cpp-sdk-mq/include/aws/mq/MQClient.h
index 1f0eba22edf2..805308189a27 100644
--- a/generated/src/aws-cpp-sdk-mq/include/aws/mq/MQClient.h
+++ b/generated/src/aws-cpp-sdk-mq/include/aws/mq/MQClient.h
@@ -727,7 +727,7 @@ class AWS_MQ_API MQClient : public Aws::Client::AWSJsonClient, public Aws::Clien
     return SubmitAsync(&MQClient::UpdateUser, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<MQEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-mturk-requester/include/aws/mturk-requester/MTurkClient.h b/generated/src/aws-cpp-sdk-mturk-requester/include/aws/mturk-requester/MTurkClient.h
index 579837259220..f8e8763ebdca 100644
--- a/generated/src/aws-cpp-sdk-mturk-requester/include/aws/mturk-requester/MTurkClient.h
+++ b/generated/src/aws-cpp-sdk-mturk-requester/include/aws/mturk-requester/MTurkClient.h
@@ -1362,7 +1362,7 @@ class AWS_MTURK_API MTurkClient : public Aws::Client::AWSJsonClient, public Aws:
     return SubmitAsync(&MTurkClient::UpdateQualificationType, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<MTurkEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-mwaa-serverless/include/aws/mwaa-serverless/MWAAServerlessClient.h b/generated/src/aws-cpp-sdk-mwaa-serverless/include/aws/mwaa-serverless/MWAAServerlessClient.h
index 1f90ee92ec64..5b6ca3e09569 100644
--- a/generated/src/aws-cpp-sdk-mwaa-serverless/include/aws/mwaa-serverless/MWAAServerlessClient.h
+++ b/generated/src/aws-cpp-sdk-mwaa-serverless/include/aws/mwaa-serverless/MWAAServerlessClient.h
@@ -520,7 +520,7 @@ class AWS_MWAASERVERLESS_API MWAAServerlessClient : public Aws::Client::AWSJsonC
     return SubmitAsync(&MWAAServerlessClient::UpdateWorkflow, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<MWAAServerlessEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-mwaa/include/aws/mwaa/MWAAClient.h b/generated/src/aws-cpp-sdk-mwaa/include/aws/mwaa/MWAAClient.h
index 29ffe1c63610..5567bf4d521c 100644
--- a/generated/src/aws-cpp-sdk-mwaa/include/aws/mwaa/MWAAClient.h
+++ b/generated/src/aws-cpp-sdk-mwaa/include/aws/mwaa/MWAAClient.h
@@ -402,7 +402,7 @@ class AWS_MWAA_API MWAAClient : public Aws::Client::AWSJsonClient, public Aws::C
     return SubmitAsync(&MWAAClient::UpdateEnvironment, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<MWAAEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-neptune-graph/include/aws/neptune-graph/NeptuneGraphClient.h b/generated/src/aws-cpp-sdk-neptune-graph/include/aws/neptune-graph/NeptuneGraphClient.h
index 5abda5b67923..bef5e12261aa 100644
--- a/generated/src/aws-cpp-sdk-neptune-graph/include/aws/neptune-graph/NeptuneGraphClient.h
+++ b/generated/src/aws-cpp-sdk-neptune-graph/include/aws/neptune-graph/NeptuneGraphClient.h
@@ -986,7 +986,7 @@ class AWS_NEPTUNEGRAPH_API NeptuneGraphClient : public Aws::Client::AWSJsonClien
     return SubmitAsync(&NeptuneGraphClient::UpdateGraph, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<NeptuneGraphEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-neptune/include/aws/neptune/NeptuneClient.h b/generated/src/aws-cpp-sdk-neptune/include/aws/neptune/NeptuneClient.h
index ae305948011b..23a247347394 100644
--- a/generated/src/aws-cpp-sdk-neptune/include/aws/neptune/NeptuneClient.h
+++ b/generated/src/aws-cpp-sdk-neptune/include/aws/neptune/NeptuneClient.h
@@ -2301,7 +2301,7 @@ class AWS_NEPTUNE_API NeptuneClient : public Aws::Client::AWSXMLClient, public A
     return SubmitAsync(&NeptuneClient::SwitchoverGlobalCluster, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<NeptuneEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-neptunedata/include/aws/neptunedata/NeptunedataClient.h b/generated/src/aws-cpp-sdk-neptunedata/include/aws/neptunedata/NeptunedataClient.h
index d5da28fea55a..0a62789c506d 100644
--- a/generated/src/aws-cpp-sdk-neptunedata/include/aws/neptunedata/NeptunedataClient.h
+++ b/generated/src/aws-cpp-sdk-neptunedata/include/aws/neptunedata/NeptunedataClient.h
@@ -1605,7 +1605,7 @@ class AWS_NEPTUNEDATA_API NeptunedataClient : public Aws::Client::AWSJsonClient,
     return SubmitAsync(&NeptunedataClient::StartMLModelTransformJob, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<NeptunedataEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-network-firewall/include/aws/network-firewall/NetworkFirewallClient.h b/generated/src/aws-cpp-sdk-network-firewall/include/aws/network-firewall/NetworkFirewallClient.h
index 8fef1a90a0a9..b5823ee58694 100644
--- a/generated/src/aws-cpp-sdk-network-firewall/include/aws/network-firewall/NetworkFirewallClient.h
+++ b/generated/src/aws-cpp-sdk-network-firewall/include/aws/network-firewall/NetworkFirewallClient.h
@@ -2611,7 +2611,7 @@ class AWS_NETWORKFIREWALL_API NetworkFirewallClient : public Aws::Client::AWSJso
     return SubmitAsync(&NetworkFirewallClient::UpdateTLSInspectionConfiguration, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<NetworkFirewallEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-networkflowmonitor/include/aws/networkflowmonitor/NetworkFlowMonitorClient.h b/generated/src/aws-cpp-sdk-networkflowmonitor/include/aws/networkflowmonitor/NetworkFlowMonitorClient.h
index 9d038d0efdb9..d30163be06dd 100644
--- a/generated/src/aws-cpp-sdk-networkflowmonitor/include/aws/networkflowmonitor/NetworkFlowMonitorClient.h
+++ b/generated/src/aws-cpp-sdk-networkflowmonitor/include/aws/networkflowmonitor/NetworkFlowMonitorClient.h
@@ -929,7 +929,7 @@ class AWS_NETWORKFLOWMONITOR_API NetworkFlowMonitorClient : public Aws::Client::
     return SubmitAsync(&NetworkFlowMonitorClient::UpdateScope, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<NetworkFlowMonitorEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-networkmanager/include/aws/networkmanager/NetworkManagerClient.h b/generated/src/aws-cpp-sdk-networkmanager/include/aws/networkmanager/NetworkManagerClient.h
index a9172cf26ded..1fead68c57d4 100644
--- a/generated/src/aws-cpp-sdk-networkmanager/include/aws/networkmanager/NetworkManagerClient.h
+++ b/generated/src/aws-cpp-sdk-networkmanager/include/aws/networkmanager/NetworkManagerClient.h
@@ -2762,7 +2762,7 @@ class AWS_NETWORKMANAGER_API NetworkManagerClient : public Aws::Client::AWSJsonC
     return SubmitAsync(&NetworkManagerClient::UpdateVpcAttachment, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<NetworkManagerEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-networkmonitor/include/aws/networkmonitor/NetworkMonitorClient.h b/generated/src/aws-cpp-sdk-networkmonitor/include/aws/networkmonitor/NetworkMonitorClient.h
index 9e6e2d19cb26..418755974f9c 100644
--- a/generated/src/aws-cpp-sdk-networkmonitor/include/aws/networkmonitor/NetworkMonitorClient.h
+++ b/generated/src/aws-cpp-sdk-networkmonitor/include/aws/networkmonitor/NetworkMonitorClient.h
@@ -447,7 +447,7 @@ class AWS_NETWORKMONITOR_API NetworkMonitorClient : public Aws::Client::AWSJsonC
     return SubmitAsync(&NetworkMonitorClient::UpdateProbe, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<NetworkMonitorEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-notifications/include/aws/notifications/NotificationsClient.h b/generated/src/aws-cpp-sdk-notifications/include/aws/notifications/NotificationsClient.h
index d80f2f10080a..5a9c083c2d9b 100644
--- a/generated/src/aws-cpp-sdk-notifications/include/aws/notifications/NotificationsClient.h
+++ b/generated/src/aws-cpp-sdk-notifications/include/aws/notifications/NotificationsClient.h
@@ -1262,7 +1262,7 @@ class AWS_NOTIFICATIONS_API NotificationsClient : public Aws::Client::AWSJsonCli
     return SubmitAsync(&NotificationsClient::UpdateNotificationConfiguration, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<NotificationsEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-notificationscontacts/include/aws/notificationscontacts/NotificationsContactsClient.h b/generated/src/aws-cpp-sdk-notificationscontacts/include/aws/notificationscontacts/NotificationsContactsClient.h
index b9bbf32b0a79..0ea7411dd8ee 100644
--- a/generated/src/aws-cpp-sdk-notificationscontacts/include/aws/notificationscontacts/NotificationsContactsClient.h
+++ b/generated/src/aws-cpp-sdk-notificationscontacts/include/aws/notificationscontacts/NotificationsContactsClient.h
@@ -326,7 +326,7 @@ class AWS_NOTIFICATIONSCONTACTS_API NotificationsContactsClient
     return SubmitAsync(&NotificationsContactsClient::UntagResource, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<NotificationsContactsEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-nova-act/include/aws/nova-act/NovaActClient.h b/generated/src/aws-cpp-sdk-nova-act/include/aws/nova-act/NovaActClient.h
index 77db5cca3e33..32424bb43050 100644
--- a/generated/src/aws-cpp-sdk-nova-act/include/aws/nova-act/NovaActClient.h
+++ b/generated/src/aws-cpp-sdk-nova-act/include/aws/nova-act/NovaActClient.h
@@ -501,7 +501,7 @@ class AWS_NOVAACT_API NovaActClient : public Aws::Client::AWSJsonClient, public
     return SubmitAsync(&NovaActClient::UpdateWorkflowRun, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<NovaActEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-oam/include/aws/oam/OAMClient.h b/generated/src/aws-cpp-sdk-oam/include/aws/oam/OAMClient.h
index 5cd0f0cef074..fc05ba088813 100644
--- a/generated/src/aws-cpp-sdk-oam/include/aws/oam/OAMClient.h
+++ b/generated/src/aws-cpp-sdk-oam/include/aws/oam/OAMClient.h
@@ -556,7 +556,7 @@ class AWS_OAM_API OAMClient : public Aws::Client::AWSJsonClient, public Aws::Cli
     return SubmitAsync(&OAMClient::UpdateLink, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<OAMEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-observabilityadmin/include/aws/observabilityadmin/ObservabilityAdminClient.h b/generated/src/aws-cpp-sdk-observabilityadmin/include/aws/observabilityadmin/ObservabilityAdminClient.h
index 055ea3e00969..0f8ccf32f235 100644
--- a/generated/src/aws-cpp-sdk-observabilityadmin/include/aws/observabilityadmin/ObservabilityAdminClient.h
+++ b/generated/src/aws-cpp-sdk-observabilityadmin/include/aws/observabilityadmin/ObservabilityAdminClient.h
@@ -1308,7 +1308,7 @@ class AWS_OBSERVABILITYADMIN_API ObservabilityAdminClient : public Aws::Client::
     return SubmitAsync(&ObservabilityAdminClient::ValidateTelemetryPipelineConfiguration, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<ObservabilityAdminEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-odb/include/aws/odb/OdbClient.h b/generated/src/aws-cpp-sdk-odb/include/aws/odb/OdbClient.h
index 75b66b9cf856..83aa4b84999d 100644
--- a/generated/src/aws-cpp-sdk-odb/include/aws/odb/OdbClient.h
+++ b/generated/src/aws-cpp-sdk-odb/include/aws/odb/OdbClient.h
@@ -1305,7 +1305,7 @@ class AWS_ODB_API OdbClient : public Aws::Client::AWSJsonClient, public Aws::Cli
     return SubmitAsync(&OdbClient::UpdateOdbPeeringConnection, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<OdbEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-omics/include/aws/omics/OmicsClient.h b/generated/src/aws-cpp-sdk-omics/include/aws/omics/OmicsClient.h
index 8b9eea0323d6..db9d40405e91 100644
--- a/generated/src/aws-cpp-sdk-omics/include/aws/omics/OmicsClient.h
+++ b/generated/src/aws-cpp-sdk-omics/include/aws/omics/OmicsClient.h
@@ -3096,7 +3096,7 @@ class AWS_OMICS_API OmicsClient : public Aws::Client::AWSJsonClient, public Aws:
     return SubmitAsync(&OmicsClient::UploadReadSetPart, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<OmicsEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-opensearch/include/aws/opensearch/OpenSearchServiceClient.h b/generated/src/aws-cpp-sdk-opensearch/include/aws/opensearch/OpenSearchServiceClient.h
index f20101403516..61056de02c0b 100644
--- a/generated/src/aws-cpp-sdk-opensearch/include/aws/opensearch/OpenSearchServiceClient.h
+++ b/generated/src/aws-cpp-sdk-opensearch/include/aws/opensearch/OpenSearchServiceClient.h
@@ -2445,7 +2445,7 @@ class AWS_OPENSEARCHSERVICE_API OpenSearchServiceClient : public Aws::Client::AW
     return SubmitAsync(&OpenSearchServiceClient::UpgradeDomain, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<OpenSearchServiceEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-opensearchserverless/include/aws/opensearchserverless/OpenSearchServerlessClient.h b/generated/src/aws-cpp-sdk-opensearchserverless/include/aws/opensearchserverless/OpenSearchServerlessClient.h
index 40ad5cd22cb3..a15e5ac45071 100644
--- a/generated/src/aws-cpp-sdk-opensearchserverless/include/aws/opensearchserverless/OpenSearchServerlessClient.h
+++ b/generated/src/aws-cpp-sdk-opensearchserverless/include/aws/opensearchserverless/OpenSearchServerlessClient.h
@@ -1446,7 +1446,7 @@ class AWS_OPENSEARCHSERVERLESS_API OpenSearchServerlessClient
     return SubmitAsync(&OpenSearchServerlessClient::UpdateVpcEndpoint, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<OpenSearchServerlessEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-organizations/include/aws/organizations/OrganizationsClient.h b/generated/src/aws-cpp-sdk-organizations/include/aws/organizations/OrganizationsClient.h
index c78f7ae8deb9..336540758bf0 100644
--- a/generated/src/aws-cpp-sdk-organizations/include/aws/organizations/OrganizationsClient.h
+++ b/generated/src/aws-cpp-sdk-organizations/include/aws/organizations/OrganizationsClient.h
@@ -2562,7 +2562,7 @@ class AWS_ORGANIZATIONS_API OrganizationsClient : public Aws::Client::AWSJsonCli
     return SubmitAsync(&OrganizationsClient::UpdateResponsibilityTransfer, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<OrganizationsEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-osis/include/aws/osis/OSISClient.h b/generated/src/aws-cpp-sdk-osis/include/aws/osis/OSISClient.h
index 24d0f3d460e7..228421489d28 100644
--- a/generated/src/aws-cpp-sdk-osis/include/aws/osis/OSISClient.h
+++ b/generated/src/aws-cpp-sdk-osis/include/aws/osis/OSISClient.h
@@ -697,7 +697,7 @@ class AWS_OSIS_API OSISClient : public Aws::Client::AWSJsonClient, public Aws::C
     return SubmitAsync(&OSISClient::ValidatePipeline, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<OSISEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-outposts/include/aws/outposts/OutpostsClient.h b/generated/src/aws-cpp-sdk-outposts/include/aws/outposts/OutpostsClient.h
index 4d3e2e63f29c..134cf0d06c4e 100644
--- a/generated/src/aws-cpp-sdk-outposts/include/aws/outposts/OutpostsClient.h
+++ b/generated/src/aws-cpp-sdk-outposts/include/aws/outposts/OutpostsClient.h
@@ -1048,7 +1048,7 @@ class AWS_OUTPOSTS_API OutpostsClient : public Aws::Client::AWSJsonClient,
     return SubmitAsync(&OutpostsClient::UpdateSiteRackPhysicalProperties, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<OutpostsEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-panorama/include/aws/panorama/PanoramaClient.h b/generated/src/aws-cpp-sdk-panorama/include/aws/panorama/PanoramaClient.h
index 200c2febfaca..2b6eac98a601 100644
--- a/generated/src/aws-cpp-sdk-panorama/include/aws/panorama/PanoramaClient.h
+++ b/generated/src/aws-cpp-sdk-panorama/include/aws/panorama/PanoramaClient.h
@@ -997,7 +997,7 @@ class AWS_PANORAMA_API PanoramaClient : public Aws::Client::AWSJsonClient,
     return SubmitAsync(&PanoramaClient::UpdateDeviceMetadata, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<PanoramaEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-partnercentral-account/include/aws/partnercentral-account/PartnerCentralAccountClient.h b/generated/src/aws-cpp-sdk-partnercentral-account/include/aws/partnercentral-account/PartnerCentralAccountClient.h
index 1986d3f38470..fb02726a88b8 100644
--- a/generated/src/aws-cpp-sdk-partnercentral-account/include/aws/partnercentral-account/PartnerCentralAccountClient.h
+++ b/generated/src/aws-cpp-sdk-partnercentral-account/include/aws/partnercentral-account/PartnerCentralAccountClient.h
@@ -895,7 +895,7 @@ class AWS_PARTNERCENTRALACCOUNT_API PartnerCentralAccountClient
     return SubmitAsync(&PartnerCentralAccountClient::UpdateConnectionPreferences, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<PartnerCentralAccountEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-partnercentral-benefits/include/aws/partnercentral-benefits/PartnerCentralBenefitsClient.h b/generated/src/aws-cpp-sdk-partnercentral-benefits/include/aws/partnercentral-benefits/PartnerCentralBenefitsClient.h
index 3844c326ec3b..1bf129e617f9 100644
--- a/generated/src/aws-cpp-sdk-partnercentral-benefits/include/aws/partnercentral-benefits/PartnerCentralBenefitsClient.h
+++ b/generated/src/aws-cpp-sdk-partnercentral-benefits/include/aws/partnercentral-benefits/PartnerCentralBenefitsClient.h
@@ -545,7 +545,7 @@ class AWS_PARTNERCENTRALBENEFITS_API PartnerCentralBenefitsClient
     return SubmitAsync(&PartnerCentralBenefitsClient::UpdateBenefitApplication, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<PartnerCentralBenefitsEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-partnercentral-channel/include/aws/partnercentral-channel/PartnerCentralChannelClient.h b/generated/src/aws-cpp-sdk-partnercentral-channel/include/aws/partnercentral-channel/PartnerCentralChannelClient.h
index 9f50eec6c5ec..029443046ad7 100644
--- a/generated/src/aws-cpp-sdk-partnercentral-channel/include/aws/partnercentral-channel/PartnerCentralChannelClient.h
+++ b/generated/src/aws-cpp-sdk-partnercentral-channel/include/aws/partnercentral-channel/PartnerCentralChannelClient.h
@@ -542,7 +542,7 @@ class AWS_PARTNERCENTRALCHANNEL_API PartnerCentralChannelClient
     return SubmitAsync(&PartnerCentralChannelClient::UpdateRelationship, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<PartnerCentralChannelEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-partnercentral-selling/include/aws/partnercentral-selling/PartnerCentralSellingClient.h b/generated/src/aws-cpp-sdk-partnercentral-selling/include/aws/partnercentral-selling/PartnerCentralSellingClient.h
index 148dfea38038..9ebdf9411c7d 100644
--- a/generated/src/aws-cpp-sdk-partnercentral-selling/include/aws/partnercentral-selling/PartnerCentralSellingClient.h
+++ b/generated/src/aws-cpp-sdk-partnercentral-selling/include/aws/partnercentral-selling/PartnerCentralSellingClient.h
@@ -1425,7 +1425,7 @@ class AWS_PARTNERCENTRALSELLING_API PartnerCentralSellingClient
     return SubmitAsync(&PartnerCentralSellingClient::UpdateOpportunity, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<PartnerCentralSellingEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-payment-cryptography-data/include/aws/payment-cryptography-data/PaymentCryptographyDataClient.h b/generated/src/aws-cpp-sdk-payment-cryptography-data/include/aws/payment-cryptography-data/PaymentCryptographyDataClient.h
index 6ffb95c36d30..03bf5ad08a00 100644
--- a/generated/src/aws-cpp-sdk-payment-cryptography-data/include/aws/payment-cryptography-data/PaymentCryptographyDataClient.h
+++ b/generated/src/aws-cpp-sdk-payment-cryptography-data/include/aws/payment-cryptography-data/PaymentCryptographyDataClient.h
@@ -866,7 +866,7 @@ class AWS_PAYMENTCRYPTOGRAPHYDATA_API PaymentCryptographyDataClient
     return SubmitAsync(&PaymentCryptographyDataClient::VerifyPinData, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<PaymentCryptographyDataEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-payment-cryptography/include/aws/payment-cryptography/PaymentCryptographyClient.h b/generated/src/aws-cpp-sdk-payment-cryptography/include/aws/payment-cryptography/PaymentCryptographyClient.h
index 8d63ee175e79..57d429471bf1 100644
--- a/generated/src/aws-cpp-sdk-payment-cryptography/include/aws/payment-cryptography/PaymentCryptographyClient.h
+++ b/generated/src/aws-cpp-sdk-payment-cryptography/include/aws/payment-cryptography/PaymentCryptographyClient.h
@@ -1438,7 +1438,7 @@ class AWS_PAYMENTCRYPTOGRAPHY_API PaymentCryptographyClient
     return SubmitAsync(&PaymentCryptographyClient::UpdateAlias, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<PaymentCryptographyEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-pca-connector-ad/include/aws/pca-connector-ad/PcaConnectorAdClient.h b/generated/src/aws-cpp-sdk-pca-connector-ad/include/aws/pca-connector-ad/PcaConnectorAdClient.h
index 372fe3c10581..b66550772a2b 100644
--- a/generated/src/aws-cpp-sdk-pca-connector-ad/include/aws/pca-connector-ad/PcaConnectorAdClient.h
+++ b/generated/src/aws-cpp-sdk-pca-connector-ad/include/aws/pca-connector-ad/PcaConnectorAdClient.h
@@ -790,7 +790,7 @@ class AWS_PCACONNECTORAD_API PcaConnectorAdClient : public Aws::Client::AWSJsonC
     return SubmitAsync(&PcaConnectorAdClient::UpdateTemplateGroupAccessControlEntry, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<PcaConnectorAdEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-pca-connector-scep/include/aws/pca-connector-scep/PcaConnectorScepClient.h b/generated/src/aws-cpp-sdk-pca-connector-scep/include/aws/pca-connector-scep/PcaConnectorScepClient.h
index 90c507d6c7ed..2a1f9b4e5beb 100644
--- a/generated/src/aws-cpp-sdk-pca-connector-scep/include/aws/pca-connector-scep/PcaConnectorScepClient.h
+++ b/generated/src/aws-cpp-sdk-pca-connector-scep/include/aws/pca-connector-scep/PcaConnectorScepClient.h
@@ -418,7 +418,7 @@ class AWS_PCACONNECTORSCEP_API PcaConnectorScepClient : public Aws::Client::AWSJ
     return SubmitAsync(&PcaConnectorScepClient::UntagResource, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<PcaConnectorScepEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-pcs/include/aws/pcs/PCSClient.h b/generated/src/aws-cpp-sdk-pcs/include/aws/pcs/PCSClient.h
index 4f76d49de599..a748e361acd0 100644
--- a/generated/src/aws-cpp-sdk-pcs/include/aws/pcs/PCSClient.h
+++ b/generated/src/aws-cpp-sdk-pcs/include/aws/pcs/PCSClient.h
@@ -632,7 +632,7 @@ class AWS_PCS_API PCSClient : public Aws::Client::AWSJsonClient, public Aws::Cli
     return SubmitAsync(&PCSClient::UpdateQueue, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<PCSEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-personalize-events/include/aws/personalize-events/PersonalizeEventsClient.h b/generated/src/aws-cpp-sdk-personalize-events/include/aws/personalize-events/PersonalizeEventsClient.h
index e2179a1072a9..4e6909b6d30f 100644
--- a/generated/src/aws-cpp-sdk-personalize-events/include/aws/personalize-events/PersonalizeEventsClient.h
+++ b/generated/src/aws-cpp-sdk-personalize-events/include/aws/personalize-events/PersonalizeEventsClient.h
@@ -221,7 +221,7 @@ class AWS_PERSONALIZEEVENTS_API PersonalizeEventsClient : public Aws::Client::AW
     return SubmitAsync(&PersonalizeEventsClient::PutUsers, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<PersonalizeEventsEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-personalize-runtime/include/aws/personalize-runtime/PersonalizeRuntimeClient.h b/generated/src/aws-cpp-sdk-personalize-runtime/include/aws/personalize-runtime/PersonalizeRuntimeClient.h
index f51e126265d5..26f0d835f758 100644
--- a/generated/src/aws-cpp-sdk-personalize-runtime/include/aws/personalize-runtime/PersonalizeRuntimeClient.h
+++ b/generated/src/aws-cpp-sdk-personalize-runtime/include/aws/personalize-runtime/PersonalizeRuntimeClient.h
@@ -180,7 +180,7 @@ class AWS_PERSONALIZERUNTIME_API PersonalizeRuntimeClient : public Aws::Client::
     return SubmitAsync(&PersonalizeRuntimeClient::GetRecommendations, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<PersonalizeRuntimeEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-personalize/include/aws/personalize/PersonalizeClient.h b/generated/src/aws-cpp-sdk-personalize/include/aws/personalize/PersonalizeClient.h
index 4f4bab818abd..7115a804e620 100644
--- a/generated/src/aws-cpp-sdk-personalize/include/aws/personalize/PersonalizeClient.h
+++ b/generated/src/aws-cpp-sdk-personalize/include/aws/personalize/PersonalizeClient.h
@@ -2514,7 +2514,7 @@ class AWS_PERSONALIZE_API PersonalizeClient : public Aws::Client::AWSJsonClient,
     return SubmitAsync(&PersonalizeClient::UpdateSolution, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<PersonalizeEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-pi/include/aws/pi/PIClient.h b/generated/src/aws-cpp-sdk-pi/include/aws/pi/PIClient.h
index f56f5285dc30..f168d44f4560 100644
--- a/generated/src/aws-cpp-sdk-pi/include/aws/pi/PIClient.h
+++ b/generated/src/aws-cpp-sdk-pi/include/aws/pi/PIClient.h
@@ -474,7 +474,7 @@ class AWS_PI_API PIClient : public Aws::Client::AWSJsonClient, public Aws::Clien
     return SubmitAsync(&PIClient::UntagResource, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<PIEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-pinpoint-email/include/aws/pinpoint-email/PinpointEmailClient.h b/generated/src/aws-cpp-sdk-pinpoint-email/include/aws/pinpoint-email/PinpointEmailClient.h
index 4bc1606eb607..56a4f08910a1 100644
--- a/generated/src/aws-cpp-sdk-pinpoint-email/include/aws/pinpoint-email/PinpointEmailClient.h
+++ b/generated/src/aws-cpp-sdk-pinpoint-email/include/aws/pinpoint-email/PinpointEmailClient.h
@@ -1428,7 +1428,7 @@ class AWS_PINPOINTEMAIL_API PinpointEmailClient : public Aws::Client::AWSJsonCli
     return SubmitAsync(&PinpointEmailClient::UpdateConfigurationSetEventDestination, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<PinpointEmailEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-pinpoint-sms-voice-v2/include/aws/pinpoint-sms-voice-v2/PinpointSMSVoiceV2Client.h b/generated/src/aws-cpp-sdk-pinpoint-sms-voice-v2/include/aws/pinpoint-sms-voice-v2/PinpointSMSVoiceV2Client.h
index 5391310b67c8..61660a7deb4c 100644
--- a/generated/src/aws-cpp-sdk-pinpoint-sms-voice-v2/include/aws/pinpoint-sms-voice-v2/PinpointSMSVoiceV2Client.h
+++ b/generated/src/aws-cpp-sdk-pinpoint-sms-voice-v2/include/aws/pinpoint-sms-voice-v2/PinpointSMSVoiceV2Client.h
@@ -2931,7 +2931,7 @@ class AWS_PINPOINTSMSVOICEV2_API PinpointSMSVoiceV2Client : public Aws::Client::
     return SubmitAsync(&PinpointSMSVoiceV2Client::VerifyDestinationNumber, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<PinpointSMSVoiceV2EndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-pinpoint/include/aws/pinpoint/PinpointClient.h b/generated/src/aws-cpp-sdk-pinpoint/include/aws/pinpoint/PinpointClient.h
index 89a638adc38d..92912537e428 100644
--- a/generated/src/aws-cpp-sdk-pinpoint/include/aws/pinpoint/PinpointClient.h
+++ b/generated/src/aws-cpp-sdk-pinpoint/include/aws/pinpoint/PinpointClient.h
@@ -3371,7 +3371,7 @@ class AWS_PINPOINT_API PinpointClient : public Aws::Client::AWSJsonClient,
     return SubmitAsync(&PinpointClient::VerifyOTPMessage, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<PinpointEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-pipes/include/aws/pipes/PipesClient.h b/generated/src/aws-cpp-sdk-pipes/include/aws/pipes/PipesClient.h
index 18815577db5a..240cc67cde4f 100644
--- a/generated/src/aws-cpp-sdk-pipes/include/aws/pipes/PipesClient.h
+++ b/generated/src/aws-cpp-sdk-pipes/include/aws/pipes/PipesClient.h
@@ -365,7 +365,7 @@ class AWS_PIPES_API PipesClient : public Aws::Client::AWSJsonClient, public Aws:
     return SubmitAsync(&PipesClient::UpdatePipe, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<PipesEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-polly/include/aws/polly/PollyClient.h b/generated/src/aws-cpp-sdk-polly/include/aws/polly/PollyClient.h
index 2fb6314a2da6..93def7742e59 100644
--- a/generated/src/aws-cpp-sdk-polly/include/aws/polly/PollyClient.h
+++ b/generated/src/aws-cpp-sdk-polly/include/aws/polly/PollyClient.h
@@ -357,7 +357,7 @@ class AWS_POLLY_API PollyClient : public Aws::Client::AWSJsonClient, public Aws:
     return SubmitAsync(&PollyClient::SynthesizeSpeech, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<PollyEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-pricing/include/aws/pricing/PricingClient.h b/generated/src/aws-cpp-sdk-pricing/include/aws/pricing/PricingClient.h
index a70574406a1f..78f5ae79f56d 100644
--- a/generated/src/aws-cpp-sdk-pricing/include/aws/pricing/PricingClient.h
+++ b/generated/src/aws-cpp-sdk-pricing/include/aws/pricing/PricingClient.h
@@ -254,7 +254,7 @@ class AWS_PRICING_API PricingClient : public Aws::Client::AWSJsonClient, public
     return SubmitAsync(&PricingClient::ListPriceLists, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<PricingEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-proton/include/aws/proton/ProtonClient.h b/generated/src/aws-cpp-sdk-proton/include/aws/proton/ProtonClient.h
index f9324a52e764..501357fe4e8c 100644
--- a/generated/src/aws-cpp-sdk-proton/include/aws/proton/ProtonClient.h
+++ b/generated/src/aws-cpp-sdk-proton/include/aws/proton/ProtonClient.h
@@ -155,7 +155,7 @@ class AWS_PROTON_API ProtonClient : public Aws::Client::AWSJsonClient, public Aw
   /* End of legacy constructors due deprecation */
   virtual ~ProtonClient();
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<ProtonEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-qapps/include/aws/qapps/QAppsClient.h b/generated/src/aws-cpp-sdk-qapps/include/aws/qapps/QAppsClient.h
index 468be637d856..d6e83bbcb9ff 100644
--- a/generated/src/aws-cpp-sdk-qapps/include/aws/qapps/QAppsClient.h
+++ b/generated/src/aws-cpp-sdk-qapps/include/aws/qapps/QAppsClient.h
@@ -1068,7 +1068,7 @@ class AWS_QAPPS_API QAppsClient : public Aws::Client::AWSJsonClient, public Aws:
     return SubmitAsync(&QAppsClient::UpdateQAppSessionMetadata, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<QAppsEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-qbusiness/include/aws/qbusiness/QBusinessClient.h b/generated/src/aws-cpp-sdk-qbusiness/include/aws/qbusiness/QBusinessClient.h
index 8eefdcc49333..85e4123a420a 100644
--- a/generated/src/aws-cpp-sdk-qbusiness/include/aws/qbusiness/QBusinessClient.h
+++ b/generated/src/aws-cpp-sdk-qbusiness/include/aws/qbusiness/QBusinessClient.h
@@ -2434,7 +2434,7 @@ class AWS_QBUSINESS_API QBusinessClient : public Aws::Client::AWSJsonClient,
     return SubmitAsync(&QBusinessClient::UpdateWebExperience, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<QBusinessEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-qconnect/include/aws/qconnect/QConnectClient.h b/generated/src/aws-cpp-sdk-qconnect/include/aws/qconnect/QConnectClient.h
index 8595714be993..255a91d316b8 100644
--- a/generated/src/aws-cpp-sdk-qconnect/include/aws/qconnect/QConnectClient.h
+++ b/generated/src/aws-cpp-sdk-qconnect/include/aws/qconnect/QConnectClient.h
@@ -2642,7 +2642,7 @@ class AWS_QCONNECT_API QConnectClient : public Aws::Client::AWSJsonClient,
     return SubmitAsync(&QConnectClient::UpdateSessionData, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<QConnectEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-quicksight/include/aws/quicksight/QuickSightClient.h b/generated/src/aws-cpp-sdk-quicksight/include/aws/quicksight/QuickSightClient.h
index cdfc8ebb9e67..62f9305dffcb 100644
--- a/generated/src/aws-cpp-sdk-quicksight/include/aws/quicksight/QuickSightClient.h
+++ b/generated/src/aws-cpp-sdk-quicksight/include/aws/quicksight/QuickSightClient.h
@@ -6995,7 +6995,7 @@ class AWS_QUICKSIGHT_API QuickSightClient : public Aws::Client::AWSJsonClient,
     return SubmitAsync(&QuickSightClient::UpdateVPCConnection, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<QuickSightEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-ram/include/aws/ram/RAMClient.h b/generated/src/aws-cpp-sdk-ram/include/aws/ram/RAMClient.h
index 56da2553539e..9fde5fd9c4d7 100644
--- a/generated/src/aws-cpp-sdk-ram/include/aws/ram/RAMClient.h
+++ b/generated/src/aws-cpp-sdk-ram/include/aws/ram/RAMClient.h
@@ -1146,7 +1146,7 @@ class AWS_RAM_API RAMClient : public Aws::Client::AWSJsonClient, public Aws::Cli
     return SubmitAsync(&RAMClient::UpdateResourceShare, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<RAMEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-rbin/include/aws/rbin/RecycleBinClient.h b/generated/src/aws-cpp-sdk-rbin/include/aws/rbin/RecycleBinClient.h
index 6687b4677c4a..2babe2d52749 100644
--- a/generated/src/aws-cpp-sdk-rbin/include/aws/rbin/RecycleBinClient.h
+++ b/generated/src/aws-cpp-sdk-rbin/include/aws/rbin/RecycleBinClient.h
@@ -368,7 +368,7 @@ class AWS_RECYCLEBIN_API RecycleBinClient : public Aws::Client::AWSJsonClient,
     return SubmitAsync(&RecycleBinClient::UpdateRule, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<RecycleBinEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-rds-data/include/aws/rds-data/RDSDataServiceClient.h b/generated/src/aws-cpp-sdk-rds-data/include/aws/rds-data/RDSDataServiceClient.h
index 12ffb7153126..edf641de52d5 100644
--- a/generated/src/aws-cpp-sdk-rds-data/include/aws/rds-data/RDSDataServiceClient.h
+++ b/generated/src/aws-cpp-sdk-rds-data/include/aws/rds-data/RDSDataServiceClient.h
@@ -240,7 +240,7 @@ class AWS_RDSDATASERVICE_API RDSDataServiceClient : public Aws::Client::AWSJsonC
     return SubmitAsync(&RDSDataServiceClient::RollbackTransaction, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<RDSDataServiceEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-rds/include/aws/rds/RDSClient.h b/generated/src/aws-cpp-sdk-rds/include/aws/rds/RDSClient.h
index 3c8318ef3eb6..fe1a514a0aaa 100644
--- a/generated/src/aws-cpp-sdk-rds/include/aws/rds/RDSClient.h
+++ b/generated/src/aws-cpp-sdk-rds/include/aws/rds/RDSClient.h
@@ -5626,7 +5626,7 @@ class AWS_RDS_API RDSClient : public Aws::Client::AWSXMLClient, public Aws::Clie
     return SubmitAsync(&RDSClient::SwitchoverReadReplica, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<RDSEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-redshift-data/include/aws/redshift-data/RedshiftDataAPIServiceClient.h b/generated/src/aws-cpp-sdk-redshift-data/include/aws/redshift-data/RedshiftDataAPIServiceClient.h
index a62e88ab9460..73691e15d0cf 100644
--- a/generated/src/aws-cpp-sdk-redshift-data/include/aws/redshift-data/RedshiftDataAPIServiceClient.h
+++ b/generated/src/aws-cpp-sdk-redshift-data/include/aws/redshift-data/RedshiftDataAPIServiceClient.h
@@ -579,7 +579,7 @@ class AWS_REDSHIFTDATAAPISERVICE_API RedshiftDataAPIServiceClient
     return SubmitAsync(&RedshiftDataAPIServiceClient::ListTables, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<RedshiftDataAPIServiceEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-redshift-serverless/include/aws/redshift-serverless/RedshiftServerlessClient.h b/generated/src/aws-cpp-sdk-redshift-serverless/include/aws/redshift-serverless/RedshiftServerlessClient.h
index a1555d1668b5..7cabbc8e0970 100644
--- a/generated/src/aws-cpp-sdk-redshift-serverless/include/aws/redshift-serverless/RedshiftServerlessClient.h
+++ b/generated/src/aws-cpp-sdk-redshift-serverless/include/aws/redshift-serverless/RedshiftServerlessClient.h
@@ -1907,7 +1907,7 @@ class AWS_REDSHIFTSERVERLESS_API RedshiftServerlessClient : public Aws::Client::
     return SubmitAsync(&RedshiftServerlessClient::UpdateWorkgroup, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<RedshiftServerlessEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-redshift/include/aws/redshift/RedshiftClient.h b/generated/src/aws-cpp-sdk-redshift/include/aws/redshift/RedshiftClient.h
index a95119d9add4..21e4a87df5ac 100644
--- a/generated/src/aws-cpp-sdk-redshift/include/aws/redshift/RedshiftClient.h
+++ b/generated/src/aws-cpp-sdk-redshift/include/aws/redshift/RedshiftClient.h
@@ -4554,7 +4554,7 @@ class AWS_REDSHIFT_API RedshiftClient : public Aws::Client::AWSXMLClient,
     return SubmitAsync(&RedshiftClient::UpdatePartnerStatus, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<RedshiftEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-rekognition/include/aws/rekognition/RekognitionClient.h b/generated/src/aws-cpp-sdk-rekognition/include/aws/rekognition/RekognitionClient.h
index 49e9771486bd..d804d18e53f5 100644
--- a/generated/src/aws-cpp-sdk-rekognition/include/aws/rekognition/RekognitionClient.h
+++ b/generated/src/aws-cpp-sdk-rekognition/include/aws/rekognition/RekognitionClient.h
@@ -3310,7 +3310,7 @@ class AWS_REKOGNITION_API RekognitionClient : public Aws::Client::AWSJsonClient,
     return SubmitAsync(&RekognitionClient::UpdateStreamProcessor, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<RekognitionEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-repostspace/include/aws/repostspace/RepostspaceClient.h b/generated/src/aws-cpp-sdk-repostspace/include/aws/repostspace/RepostspaceClient.h
index 0c5ed9dd0f18..d4d3d53e0294 100644
--- a/generated/src/aws-cpp-sdk-repostspace/include/aws/repostspace/RepostspaceClient.h
+++ b/generated/src/aws-cpp-sdk-repostspace/include/aws/repostspace/RepostspaceClient.h
@@ -589,7 +589,7 @@ class AWS_REPOSTSPACE_API RepostspaceClient : public Aws::Client::AWSJsonClient,
     return SubmitAsync(&RepostspaceClient::UpdateSpace, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<RepostspaceEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-resiliencehub/include/aws/resiliencehub/ResilienceHubClient.h b/generated/src/aws-cpp-sdk-resiliencehub/include/aws/resiliencehub/ResilienceHubClient.h
index bbec24deeb1a..f645d89b668f 100644
--- a/generated/src/aws-cpp-sdk-resiliencehub/include/aws/resiliencehub/ResilienceHubClient.h
+++ b/generated/src/aws-cpp-sdk-resiliencehub/include/aws/resiliencehub/ResilienceHubClient.h
@@ -1967,7 +1967,7 @@ class AWS_RESILIENCEHUB_API ResilienceHubClient : public Aws::Client::AWSJsonCli
     return SubmitAsync(&ResilienceHubClient::UpdateResiliencyPolicy, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<ResilienceHubEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-resource-explorer-2/include/aws/resource-explorer-2/ResourceExplorer2Client.h b/generated/src/aws-cpp-sdk-resource-explorer-2/include/aws/resource-explorer-2/ResourceExplorer2Client.h
index b8d5a22bb4c2..0d5928ceac15 100644
--- a/generated/src/aws-cpp-sdk-resource-explorer-2/include/aws/resource-explorer-2/ResourceExplorer2Client.h
+++ b/generated/src/aws-cpp-sdk-resource-explorer-2/include/aws/resource-explorer-2/ResourceExplorer2Client.h
@@ -1131,7 +1131,7 @@ class AWS_RESOURCEEXPLORER2_API ResourceExplorer2Client : public Aws::Client::AW
     return SubmitAsync(&ResourceExplorer2Client::UpdateView, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<ResourceExplorer2EndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-resource-groups/include/aws/resource-groups/ResourceGroupsClient.h b/generated/src/aws-cpp-sdk-resource-groups/include/aws/resource-groups/ResourceGroupsClient.h
index 0b29bb96359b..c22a9a59028d 100644
--- a/generated/src/aws-cpp-sdk-resource-groups/include/aws/resource-groups/ResourceGroupsClient.h
+++ b/generated/src/aws-cpp-sdk-resource-groups/include/aws/resource-groups/ResourceGroupsClient.h
@@ -819,7 +819,7 @@ class AWS_RESOURCEGROUPS_API ResourceGroupsClient : public Aws::Client::AWSJsonC
     return SubmitAsync(&ResourceGroupsClient::UpdateGroupQuery, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<ResourceGroupsEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-resourcegroupstaggingapi/include/aws/resourcegroupstaggingapi/ResourceGroupsTaggingAPIClient.h b/generated/src/aws-cpp-sdk-resourcegroupstaggingapi/include/aws/resourcegroupstaggingapi/ResourceGroupsTaggingAPIClient.h
index 2f477ce14a69..73dcf7bf47b4 100644
--- a/generated/src/aws-cpp-sdk-resourcegroupstaggingapi/include/aws/resourcegroupstaggingapi/ResourceGroupsTaggingAPIClient.h
+++ b/generated/src/aws-cpp-sdk-resourcegroupstaggingapi/include/aws/resourcegroupstaggingapi/ResourceGroupsTaggingAPIClient.h
@@ -440,7 +440,7 @@ class AWS_RESOURCEGROUPSTAGGINGAPI_API ResourceGroupsTaggingAPIClient
     return SubmitAsync(&ResourceGroupsTaggingAPIClient::UntagResources, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<ResourceGroupsTaggingAPIEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-rolesanywhere/include/aws/rolesanywhere/RolesAnywhereClient.h b/generated/src/aws-cpp-sdk-rolesanywhere/include/aws/rolesanywhere/RolesAnywhereClient.h
index 9725d99a025f..8f3265db236c 100644
--- a/generated/src/aws-cpp-sdk-rolesanywhere/include/aws/rolesanywhere/RolesAnywhereClient.h
+++ b/generated/src/aws-cpp-sdk-rolesanywhere/include/aws/rolesanywhere/RolesAnywhereClient.h
@@ -934,7 +934,7 @@ class AWS_ROLESANYWHERE_API RolesAnywhereClient : public Aws::Client::AWSJsonCli
     return SubmitAsync(&RolesAnywhereClient::UpdateTrustAnchor, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<RolesAnywhereEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-route53-recovery-cluster/include/aws/route53-recovery-cluster/Route53RecoveryClusterClient.h b/generated/src/aws-cpp-sdk-route53-recovery-cluster/include/aws/route53-recovery-cluster/Route53RecoveryClusterClient.h
index 2f2c2428a2bf..aaa522891232 100644
--- a/generated/src/aws-cpp-sdk-route53-recovery-cluster/include/aws/route53-recovery-cluster/Route53RecoveryClusterClient.h
+++ b/generated/src/aws-cpp-sdk-route53-recovery-cluster/include/aws/route53-recovery-cluster/Route53RecoveryClusterClient.h
@@ -329,7 +329,7 @@ class AWS_ROUTE53RECOVERYCLUSTER_API Route53RecoveryClusterClient
     return SubmitAsync(&Route53RecoveryClusterClient::UpdateRoutingControlStates, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<Route53RecoveryClusterEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-route53-recovery-control-config/include/aws/route53-recovery-control-config/Route53RecoveryControlConfigClient.h b/generated/src/aws-cpp-sdk-route53-recovery-control-config/include/aws/route53-recovery-control-config/Route53RecoveryControlConfigClient.h
index b3d6818490b6..f81d2af753c5 100644
--- a/generated/src/aws-cpp-sdk-route53-recovery-control-config/include/aws/route53-recovery-control-config/Route53RecoveryControlConfigClient.h
+++ b/generated/src/aws-cpp-sdk-route53-recovery-control-config/include/aws/route53-recovery-control-config/Route53RecoveryControlConfigClient.h
@@ -784,7 +784,7 @@ class AWS_ROUTE53RECOVERYCONTROLCONFIG_API Route53RecoveryControlConfigClient
     return SubmitAsync(&Route53RecoveryControlConfigClient::UpdateSafetyRule, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<Route53RecoveryControlConfigEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-route53-recovery-readiness/include/aws/route53-recovery-readiness/Route53RecoveryReadinessClient.h b/generated/src/aws-cpp-sdk-route53-recovery-readiness/include/aws/route53-recovery-readiness/Route53RecoveryReadinessClient.h
index 55ff35d1a075..bcf1726c089a 100644
--- a/generated/src/aws-cpp-sdk-route53-recovery-readiness/include/aws/route53-recovery-readiness/Route53RecoveryReadinessClient.h
+++ b/generated/src/aws-cpp-sdk-route53-recovery-readiness/include/aws/route53-recovery-readiness/Route53RecoveryReadinessClient.h
@@ -953,7 +953,7 @@ class AWS_ROUTE53RECOVERYREADINESS_API Route53RecoveryReadinessClient
     return SubmitAsync(&Route53RecoveryReadinessClient::UpdateResourceSet, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<Route53RecoveryReadinessEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-route53/include/aws/route53/Route53Client.h b/generated/src/aws-cpp-sdk-route53/include/aws/route53/Route53Client.h
index b716ca9a1eb1..d281f5b287e2 100644
--- a/generated/src/aws-cpp-sdk-route53/include/aws/route53/Route53Client.h
+++ b/generated/src/aws-cpp-sdk-route53/include/aws/route53/Route53Client.h
@@ -2725,7 +2725,7 @@ class AWS_ROUTE53_API Route53Client : public Aws::Client::AWSXMLClient, public A
     return SubmitAsync(&Route53Client::UpdateTrafficPolicyInstance, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<Route53EndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-route53domains/include/aws/route53domains/Route53DomainsClient.h b/generated/src/aws-cpp-sdk-route53domains/include/aws/route53domains/Route53DomainsClient.h
index c95444d29690..8266b963dcdc 100644
--- a/generated/src/aws-cpp-sdk-route53domains/include/aws/route53domains/Route53DomainsClient.h
+++ b/generated/src/aws-cpp-sdk-route53domains/include/aws/route53domains/Route53DomainsClient.h
@@ -1233,7 +1233,7 @@ class AWS_ROUTE53DOMAINS_API Route53DomainsClient : public Aws::Client::AWSJsonC
     return SubmitAsync(&Route53DomainsClient::ViewBilling, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<Route53DomainsEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-route53globalresolver/include/aws/route53globalresolver/Route53GlobalResolverClient.h b/generated/src/aws-cpp-sdk-route53globalresolver/include/aws/route53globalresolver/Route53GlobalResolverClient.h
index 9a845573aadd..dbd7f77474e6 100644
--- a/generated/src/aws-cpp-sdk-route53globalresolver/include/aws/route53globalresolver/Route53GlobalResolverClient.h
+++ b/generated/src/aws-cpp-sdk-route53globalresolver/include/aws/route53globalresolver/Route53GlobalResolverClient.h
@@ -1369,7 +1369,7 @@ class AWS_ROUTE53GLOBALRESOLVER_API Route53GlobalResolverClient
     return SubmitAsync(&Route53GlobalResolverClient::UpdateHostedZoneAssociation, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<Route53GlobalResolverEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-route53profiles/include/aws/route53profiles/Route53ProfilesClient.h b/generated/src/aws-cpp-sdk-route53profiles/include/aws/route53profiles/Route53ProfilesClient.h
index a0b0882e3b62..38ebde3285ae 100644
--- a/generated/src/aws-cpp-sdk-route53profiles/include/aws/route53profiles/Route53ProfilesClient.h
+++ b/generated/src/aws-cpp-sdk-route53profiles/include/aws/route53profiles/Route53ProfilesClient.h
@@ -523,7 +523,7 @@ class AWS_ROUTE53PROFILES_API Route53ProfilesClient : public Aws::Client::AWSJso
     return SubmitAsync(&Route53ProfilesClient::UpdateProfileResourceAssociation, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<Route53ProfilesEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-route53resolver/include/aws/route53resolver/Route53ResolverClient.h b/generated/src/aws-cpp-sdk-route53resolver/include/aws/route53resolver/Route53ResolverClient.h
index 42e1ab6dce85..426c53ab509d 100644
--- a/generated/src/aws-cpp-sdk-route53resolver/include/aws/route53resolver/Route53ResolverClient.h
+++ b/generated/src/aws-cpp-sdk-route53resolver/include/aws/route53resolver/Route53ResolverClient.h
@@ -2128,7 +2128,7 @@ class AWS_ROUTE53RESOLVER_API Route53ResolverClient : public Aws::Client::AWSJso
     return SubmitAsync(&Route53ResolverClient::UpdateResolverRule, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<Route53ResolverEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-rtbfabric/include/aws/rtbfabric/RTBFabricClient.h b/generated/src/aws-cpp-sdk-rtbfabric/include/aws/rtbfabric/RTBFabricClient.h
index cd809bbc5d6a..2ae9f900699d 100644
--- a/generated/src/aws-cpp-sdk-rtbfabric/include/aws/rtbfabric/RTBFabricClient.h
+++ b/generated/src/aws-cpp-sdk-rtbfabric/include/aws/rtbfabric/RTBFabricClient.h
@@ -815,7 +815,7 @@ class AWS_RTBFABRIC_API RTBFabricClient : public Aws::Client::AWSJsonClient,
     return SubmitAsync(&RTBFabricClient::UpdateResponderGateway, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<RTBFabricEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-rum/include/aws/rum/CloudWatchRUMClient.h b/generated/src/aws-cpp-sdk-rum/include/aws/rum/CloudWatchRUMClient.h
index ea06810fee43..58b2e199be41 100644
--- a/generated/src/aws-cpp-sdk-rum/include/aws/rum/CloudWatchRUMClient.h
+++ b/generated/src/aws-cpp-sdk-rum/include/aws/rum/CloudWatchRUMClient.h
@@ -733,7 +733,7 @@ class AWS_CLOUDWATCHRUM_API CloudWatchRUMClient : public Aws::Client::AWSJsonCli
     return SubmitAsync(&CloudWatchRUMClient::UpdateRumMetricDefinition, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<CloudWatchRUMEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-s3-crt/include/aws/s3-crt/S3CrtClient.h b/generated/src/aws-cpp-sdk-s3-crt/include/aws/s3-crt/S3CrtClient.h
index fb5375d45490..27d797ecde5e 100644
--- a/generated/src/aws-cpp-sdk-s3-crt/include/aws/s3-crt/S3CrtClient.h
+++ b/generated/src/aws-cpp-sdk-s3-crt/include/aws/s3-crt/S3CrtClient.h
@@ -8253,7 +8253,7 @@ class AWS_S3CRT_API S3CrtClient : public Aws::Client::AWSXMLClient, public Aws::
 
   virtual bool MultipartUploadSupported() const;
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<S3CrtEndpointProviderBase>& accessEndpointProvider();
 
   struct CrtRequestCallbackUserData {
@@ -8269,8 +8269,8 @@ class AWS_S3CRT_API S3CrtClient : public Aws::Client::AWSXMLClient, public Aws::
     Aws::UniquePtr<struct aws_s3_checksum_config> checksumConfig;
   };
 
-  Aws::Client::XmlOutcome GenerateXmlOutcome(const std::shared_ptr<Http::HttpResponse>& response) const;
-  Aws::Client::StreamOutcome GenerateStreamOutcome(const std::shared_ptr<Http::HttpResponse>& response) const;
+  virtual Aws::Client::XmlOutcome GenerateXmlOutcome(const std::shared_ptr<Http::HttpResponse>& response) const;
+  virtual Aws::Client::StreamOutcome GenerateStreamOutcome(const std::shared_ptr<Http::HttpResponse>& response) const;
 
  protected:
   void AddContentLengthToRequest(const std::shared_ptr<Aws::Http::HttpRequest>& httpRequest, const std::shared_ptr<Aws::IOStream>& body,
diff --git a/generated/src/aws-cpp-sdk-s3/include/aws/s3/S3Client.h b/generated/src/aws-cpp-sdk-s3/include/aws/s3/S3Client.h
index 7e036d82a8c5..2f046189a4fe 100644
--- a/generated/src/aws-cpp-sdk-s3/include/aws/s3/S3Client.h
+++ b/generated/src/aws-cpp-sdk-s3/include/aws/s3/S3Client.h
@@ -8272,7 +8272,7 @@ class AWS_S3_API S3Client : public Aws::Client::AWSXMLClient, public Aws::Client
 
   virtual bool MultipartUploadSupported() const;
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<S3EndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-s3control/include/aws/s3control/S3ControlClient.h b/generated/src/aws-cpp-sdk-s3control/include/aws/s3control/S3ControlClient.h
index ae17cf41a565..debe54ba1d8f 100644
--- a/generated/src/aws-cpp-sdk-s3control/include/aws/s3control/S3ControlClient.h
+++ b/generated/src/aws-cpp-sdk-s3control/include/aws/s3control/S3ControlClient.h
@@ -4248,7 +4248,7 @@ class AWS_S3CONTROL_API S3ControlClient : public Aws::Client::AWSXMLClient,
     return SubmitAsync(&S3ControlClient::UpdateStorageLensGroup, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<S3ControlEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-s3outposts/include/aws/s3outposts/S3OutpostsClient.h b/generated/src/aws-cpp-sdk-s3outposts/include/aws/s3outposts/S3OutpostsClient.h
index 014efee599fd..f6d05c892ca3 100644
--- a/generated/src/aws-cpp-sdk-s3outposts/include/aws/s3outposts/S3OutpostsClient.h
+++ b/generated/src/aws-cpp-sdk-s3outposts/include/aws/s3outposts/S3OutpostsClient.h
@@ -229,7 +229,7 @@ class AWS_S3OUTPOSTS_API S3OutpostsClient : public Aws::Client::AWSJsonClient,
     return SubmitAsync(&S3OutpostsClient::ListSharedEndpoints, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<S3OutpostsEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-s3tables/include/aws/s3tables/S3TablesClient.h b/generated/src/aws-cpp-sdk-s3tables/include/aws/s3tables/S3TablesClient.h
index f22415a297ea..a9c5c54114ab 100644
--- a/generated/src/aws-cpp-sdk-s3tables/include/aws/s3tables/S3TablesClient.h
+++ b/generated/src/aws-cpp-sdk-s3tables/include/aws/s3tables/S3TablesClient.h
@@ -1705,7 +1705,7 @@ class AWS_S3TABLES_API S3TablesClient : public Aws::Client::AWSJsonClient,
     return SubmitAsync(&S3TablesClient::UpdateTableMetadataLocation, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<S3TablesEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-s3vectors/include/aws/s3vectors/S3VectorsClient.h b/generated/src/aws-cpp-sdk-s3vectors/include/aws/s3vectors/S3VectorsClient.h
index fbe7489f38ac..5942aa2fbc8b 100644
--- a/generated/src/aws-cpp-sdk-s3vectors/include/aws/s3vectors/S3VectorsClient.h
+++ b/generated/src/aws-cpp-sdk-s3vectors/include/aws/s3vectors/S3VectorsClient.h
@@ -703,7 +703,7 @@ class AWS_S3VECTORS_API S3VectorsClient : public Aws::Client::AWSJsonClient,
     return SubmitAsync(&S3VectorsClient::UntagResource, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<S3VectorsEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-sagemaker-a2i-runtime/include/aws/sagemaker-a2i-runtime/AugmentedAIRuntimeClient.h b/generated/src/aws-cpp-sdk-sagemaker-a2i-runtime/include/aws/sagemaker-a2i-runtime/AugmentedAIRuntimeClient.h
index cdac5a30c82c..23dbab6764b6 100644
--- a/generated/src/aws-cpp-sdk-sagemaker-a2i-runtime/include/aws/sagemaker-a2i-runtime/AugmentedAIRuntimeClient.h
+++ b/generated/src/aws-cpp-sdk-sagemaker-a2i-runtime/include/aws/sagemaker-a2i-runtime/AugmentedAIRuntimeClient.h
@@ -235,7 +235,7 @@ class AWS_AUGMENTEDAIRUNTIME_API AugmentedAIRuntimeClient : public Aws::Client::
     return SubmitAsync(&AugmentedAIRuntimeClient::StopHumanLoop, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<AugmentedAIRuntimeEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-sagemaker-edge/include/aws/sagemaker-edge/SagemakerEdgeManagerClient.h b/generated/src/aws-cpp-sdk-sagemaker-edge/include/aws/sagemaker-edge/SagemakerEdgeManagerClient.h
index 1bef8aafa78d..bded02cb6e98 100644
--- a/generated/src/aws-cpp-sdk-sagemaker-edge/include/aws/sagemaker-edge/SagemakerEdgeManagerClient.h
+++ b/generated/src/aws-cpp-sdk-sagemaker-edge/include/aws/sagemaker-edge/SagemakerEdgeManagerClient.h
@@ -156,7 +156,7 @@ class AWS_SAGEMAKEREDGEMANAGER_API SagemakerEdgeManagerClient
     return SubmitAsync(&SagemakerEdgeManagerClient::SendHeartbeat, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<SagemakerEdgeManagerEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-sagemaker-featurestore-runtime/include/aws/sagemaker-featurestore-runtime/SageMakerFeatureStoreRuntimeClient.h b/generated/src/aws-cpp-sdk-sagemaker-featurestore-runtime/include/aws/sagemaker-featurestore-runtime/SageMakerFeatureStoreRuntimeClient.h
index 2efad4ae1102..28fdbe567b21 100644
--- a/generated/src/aws-cpp-sdk-sagemaker-featurestore-runtime/include/aws/sagemaker-featurestore-runtime/SageMakerFeatureStoreRuntimeClient.h
+++ b/generated/src/aws-cpp-sdk-sagemaker-featurestore-runtime/include/aws/sagemaker-featurestore-runtime/SageMakerFeatureStoreRuntimeClient.h
@@ -240,7 +240,7 @@ class AWS_SAGEMAKERFEATURESTORERUNTIME_API SageMakerFeatureStoreRuntimeClient
     return SubmitAsync(&SageMakerFeatureStoreRuntimeClient::PutRecord, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<SageMakerFeatureStoreRuntimeEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-sagemaker-geospatial/include/aws/sagemaker-geospatial/SageMakerGeospatialClient.h b/generated/src/aws-cpp-sdk-sagemaker-geospatial/include/aws/sagemaker-geospatial/SageMakerGeospatialClient.h
index b6e4ddeb35a3..7551897c0d94 100644
--- a/generated/src/aws-cpp-sdk-sagemaker-geospatial/include/aws/sagemaker-geospatial/SageMakerGeospatialClient.h
+++ b/generated/src/aws-cpp-sdk-sagemaker-geospatial/include/aws/sagemaker-geospatial/SageMakerGeospatialClient.h
@@ -610,7 +610,7 @@ class AWS_SAGEMAKERGEOSPATIAL_API SageMakerGeospatialClient
     return SubmitAsync(&SageMakerGeospatialClient::UntagResource, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<SageMakerGeospatialEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-sagemaker-metrics/include/aws/sagemaker-metrics/SageMakerMetricsClient.h b/generated/src/aws-cpp-sdk-sagemaker-metrics/include/aws/sagemaker-metrics/SageMakerMetricsClient.h
index 250a16a8fc13..3cf95b349f96 100644
--- a/generated/src/aws-cpp-sdk-sagemaker-metrics/include/aws/sagemaker-metrics/SageMakerMetricsClient.h
+++ b/generated/src/aws-cpp-sdk-sagemaker-metrics/include/aws/sagemaker-metrics/SageMakerMetricsClient.h
@@ -131,7 +131,7 @@ class AWS_SAGEMAKERMETRICS_API SageMakerMetricsClient : public Aws::Client::AWSJ
     return SubmitAsync(&SageMakerMetricsClient::BatchPutMetrics, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<SageMakerMetricsEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-sagemaker-runtime-http2/include/aws/sagemaker-runtime-http2/SageMakerRuntimeHTTP2Client.h b/generated/src/aws-cpp-sdk-sagemaker-runtime-http2/include/aws/sagemaker-runtime-http2/SageMakerRuntimeHTTP2Client.h
index 5d7932bfb88b..77aee7df2917 100644
--- a/generated/src/aws-cpp-sdk-sagemaker-runtime-http2/include/aws/sagemaker-runtime-http2/SageMakerRuntimeHTTP2Client.h
+++ b/generated/src/aws-cpp-sdk-sagemaker-runtime-http2/include/aws/sagemaker-runtime-http2/SageMakerRuntimeHTTP2Client.h
@@ -115,7 +115,7 @@ class AWS_SAGEMAKERRUNTIMEHTTP2_API SageMakerRuntimeHTTP2Client
       const InvokeEndpointWithBidirectionalStreamResponseReceivedHandler& handler,
       const std::shared_ptr<const Aws::Client::AsyncCallerContext>& handlerContext = nullptr) const;
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<SageMakerRuntimeHTTP2EndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-sagemaker-runtime/include/aws/sagemaker-runtime/SageMakerRuntimeClient.h b/generated/src/aws-cpp-sdk-sagemaker-runtime/include/aws/sagemaker-runtime/SageMakerRuntimeClient.h
index c21e8719fbbd..e87c2a5d5837 100644
--- a/generated/src/aws-cpp-sdk-sagemaker-runtime/include/aws/sagemaker-runtime/SageMakerRuntimeClient.h
+++ b/generated/src/aws-cpp-sdk-sagemaker-runtime/include/aws/sagemaker-runtime/SageMakerRuntimeClient.h
@@ -214,7 +214,7 @@ class AWS_SAGEMAKERRUNTIME_API SageMakerRuntimeClient : public Aws::Client::AWSJ
     return SubmitAsync(&SageMakerRuntimeClient::InvokeEndpointWithResponseStream, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<SageMakerRuntimeEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-sagemaker/include/aws/sagemaker/SageMakerClient.h b/generated/src/aws-cpp-sdk-sagemaker/include/aws/sagemaker/SageMakerClient.h
index 6f148a491f43..ff262a1b2868 100644
--- a/generated/src/aws-cpp-sdk-sagemaker/include/aws/sagemaker/SageMakerClient.h
+++ b/generated/src/aws-cpp-sdk-sagemaker/include/aws/sagemaker/SageMakerClient.h
@@ -11546,7 +11546,7 @@ class AWS_SAGEMAKER_API SageMakerClient : public Aws::Client::AWSJsonClient,
     return SubmitAsync(&SageMakerClient::UpdateWorkteam, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<SageMakerEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-savingsplans/include/aws/savingsplans/SavingsPlansClient.h b/generated/src/aws-cpp-sdk-savingsplans/include/aws/savingsplans/SavingsPlansClient.h
index cd268f99df76..c615d284b3a2 100644
--- a/generated/src/aws-cpp-sdk-savingsplans/include/aws/savingsplans/SavingsPlansClient.h
+++ b/generated/src/aws-cpp-sdk-savingsplans/include/aws/savingsplans/SavingsPlansClient.h
@@ -353,7 +353,7 @@ class AWS_SAVINGSPLANS_API SavingsPlansClient : public Aws::Client::AWSJsonClien
     return SubmitAsync(&SavingsPlansClient::UntagResource, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<SavingsPlansEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-scheduler/include/aws/scheduler/SchedulerClient.h b/generated/src/aws-cpp-sdk-scheduler/include/aws/scheduler/SchedulerClient.h
index 8002c4b57a13..921e807a32df 100644
--- a/generated/src/aws-cpp-sdk-scheduler/include/aws/scheduler/SchedulerClient.h
+++ b/generated/src/aws-cpp-sdk-scheduler/include/aws/scheduler/SchedulerClient.h
@@ -403,7 +403,7 @@ class AWS_SCHEDULER_API SchedulerClient : public Aws::Client::AWSJsonClient,
     return SubmitAsync(&SchedulerClient::UpdateSchedule, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<SchedulerEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-schemas/include/aws/schemas/SchemasClient.h b/generated/src/aws-cpp-sdk-schemas/include/aws/schemas/SchemasClient.h
index c4ddf31760f6..98fac5de4cc3 100644
--- a/generated/src/aws-cpp-sdk-schemas/include/aws/schemas/SchemasClient.h
+++ b/generated/src/aws-cpp-sdk-schemas/include/aws/schemas/SchemasClient.h
@@ -867,7 +867,7 @@ class AWS_SCHEMAS_API SchemasClient : public Aws::Client::AWSJsonClient, public
     return SubmitAsync(&SchemasClient::UpdateSchema, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<SchemasEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-sdb/include/aws/sdb/SimpleDBClient.h b/generated/src/aws-cpp-sdk-sdb/include/aws/sdb/SimpleDBClient.h
index f96d22897bd0..6a32f4543b87 100644
--- a/generated/src/aws-cpp-sdk-sdb/include/aws/sdb/SimpleDBClient.h
+++ b/generated/src/aws-cpp-sdk-sdb/include/aws/sdb/SimpleDBClient.h
@@ -455,7 +455,7 @@ class AWS_SIMPLEDB_API SimpleDBClient : public Aws::Client::AWSXMLClient,
     return SubmitAsync(&SimpleDBClient::Select, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<SimpleDBEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-secretsmanager/include/aws/secretsmanager/SecretsManagerClient.h b/generated/src/aws-cpp-sdk-secretsmanager/include/aws/secretsmanager/SecretsManagerClient.h
index d09654821575..f9c4f345d542 100644
--- a/generated/src/aws-cpp-sdk-secretsmanager/include/aws/secretsmanager/SecretsManagerClient.h
+++ b/generated/src/aws-cpp-sdk-secretsmanager/include/aws/secretsmanager/SecretsManagerClient.h
@@ -1197,7 +1197,7 @@ class AWS_SECRETSMANAGER_API SecretsManagerClient : public Aws::Client::AWSJsonC
     return SubmitAsync(&SecretsManagerClient::ValidateResourcePolicy, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<SecretsManagerEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-security-ir/include/aws/security-ir/SecurityIRClient.h b/generated/src/aws-cpp-sdk-security-ir/include/aws/security-ir/SecurityIRClient.h
index 0e42b8590a56..ec4044678c71 100644
--- a/generated/src/aws-cpp-sdk-security-ir/include/aws/security-ir/SecurityIRClient.h
+++ b/generated/src/aws-cpp-sdk-security-ir/include/aws/security-ir/SecurityIRClient.h
@@ -720,7 +720,7 @@ class AWS_SECURITYIR_API SecurityIRClient : public Aws::Client::AWSJsonClient,
     return SubmitAsync(&SecurityIRClient::UpdateResolverType, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<SecurityIREndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-securityhub/include/aws/securityhub/SecurityHubClient.h b/generated/src/aws-cpp-sdk-securityhub/include/aws/securityhub/SecurityHubClient.h
index 28c11c83e2bd..093c5958a8df 100644
--- a/generated/src/aws-cpp-sdk-securityhub/include/aws/securityhub/SecurityHubClient.h
+++ b/generated/src/aws-cpp-sdk-securityhub/include/aws/securityhub/SecurityHubClient.h
@@ -3309,7 +3309,7 @@ class AWS_SECURITYHUB_API SecurityHubClient : public Aws::Client::AWSJsonClient,
     return SubmitAsync(&SecurityHubClient::UpdateStandardsControl, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<SecurityHubEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-securitylake/include/aws/securitylake/SecurityLakeClient.h b/generated/src/aws-cpp-sdk-securitylake/include/aws/securitylake/SecurityLakeClient.h
index 236572ce1f8c..929b97110c0e 100644
--- a/generated/src/aws-cpp-sdk-securitylake/include/aws/securitylake/SecurityLakeClient.h
+++ b/generated/src/aws-cpp-sdk-securitylake/include/aws/securitylake/SecurityLakeClient.h
@@ -1082,7 +1082,7 @@ class AWS_SECURITYLAKE_API SecurityLakeClient : public Aws::Client::AWSJsonClien
     return SubmitAsync(&SecurityLakeClient::UpdateSubscriberNotification, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<SecurityLakeEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-serverlessrepo/include/aws/serverlessrepo/ServerlessApplicationRepositoryClient.h b/generated/src/aws-cpp-sdk-serverlessrepo/include/aws/serverlessrepo/ServerlessApplicationRepositoryClient.h
index df9f2a9be221..5aeb21399d9a 100644
--- a/generated/src/aws-cpp-sdk-serverlessrepo/include/aws/serverlessrepo/ServerlessApplicationRepositoryClient.h
+++ b/generated/src/aws-cpp-sdk-serverlessrepo/include/aws/serverlessrepo/ServerlessApplicationRepositoryClient.h
@@ -512,7 +512,7 @@ Permissions</a>
     return SubmitAsync(&ServerlessApplicationRepositoryClient::UpdateApplication, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<ServerlessApplicationRepositoryEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-service-quotas/include/aws/service-quotas/ServiceQuotasClient.h b/generated/src/aws-cpp-sdk-service-quotas/include/aws/service-quotas/ServiceQuotasClient.h
index db85ab721382..56537837faff 100644
--- a/generated/src/aws-cpp-sdk-service-quotas/include/aws/service-quotas/ServiceQuotasClient.h
+++ b/generated/src/aws-cpp-sdk-service-quotas/include/aws/service-quotas/ServiceQuotasClient.h
@@ -877,7 +877,7 @@ class AWS_SERVICEQUOTAS_API ServiceQuotasClient : public Aws::Client::AWSJsonCli
     return SubmitAsync(&ServiceQuotasClient::UpdateAutoManagement, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<ServiceQuotasEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-servicecatalog-appregistry/include/aws/servicecatalog-appregistry/AppRegistryClient.h b/generated/src/aws-cpp-sdk-servicecatalog-appregistry/include/aws/servicecatalog-appregistry/AppRegistryClient.h
index 4d74a0460c23..bcb6b2ed7477 100644
--- a/generated/src/aws-cpp-sdk-servicecatalog-appregistry/include/aws/servicecatalog-appregistry/AppRegistryClient.h
+++ b/generated/src/aws-cpp-sdk-servicecatalog-appregistry/include/aws/servicecatalog-appregistry/AppRegistryClient.h
@@ -792,7 +792,7 @@ class AWS_APPREGISTRY_API AppRegistryClient : public Aws::Client::AWSJsonClient,
     return SubmitAsync(&AppRegistryClient::UpdateAttributeGroup, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<AppRegistryEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-servicecatalog/include/aws/servicecatalog/ServiceCatalogClient.h b/generated/src/aws-cpp-sdk-servicecatalog/include/aws/servicecatalog/ServiceCatalogClient.h
index 9305c25a31f2..676b10f25b89 100644
--- a/generated/src/aws-cpp-sdk-servicecatalog/include/aws/servicecatalog/ServiceCatalogClient.h
+++ b/generated/src/aws-cpp-sdk-servicecatalog/include/aws/servicecatalog/ServiceCatalogClient.h
@@ -2865,7 +2865,7 @@ class AWS_SERVICECATALOG_API ServiceCatalogClient : public Aws::Client::AWSJsonC
     return SubmitAsync(&ServiceCatalogClient::UpdateTagOption, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<ServiceCatalogEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-servicediscovery/include/aws/servicediscovery/ServiceDiscoveryClient.h b/generated/src/aws-cpp-sdk-servicediscovery/include/aws/servicediscovery/ServiceDiscoveryClient.h
index 15027feedac0..bea908154992 100644
--- a/generated/src/aws-cpp-sdk-servicediscovery/include/aws/servicediscovery/ServiceDiscoveryClient.h
+++ b/generated/src/aws-cpp-sdk-servicediscovery/include/aws/servicediscovery/ServiceDiscoveryClient.h
@@ -986,7 +986,7 @@ class AWS_SERVICEDISCOVERY_API ServiceDiscoveryClient : public Aws::Client::AWSJ
     return SubmitAsync(&ServiceDiscoveryClient::UpdateServiceAttributes, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<ServiceDiscoveryEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-sesv2/include/aws/sesv2/SESV2Client.h b/generated/src/aws-cpp-sdk-sesv2/include/aws/sesv2/SESV2Client.h
index e0d358958a59..85aeaf4b238e 100644
--- a/generated/src/aws-cpp-sdk-sesv2/include/aws/sesv2/SESV2Client.h
+++ b/generated/src/aws-cpp-sdk-sesv2/include/aws/sesv2/SESV2Client.h
@@ -3441,7 +3441,7 @@ class AWS_SESV2_API SESV2Client : public Aws::Client::AWSJsonClient, public Aws:
     return SubmitAsync(&SESV2Client::UpdateReputationEntityPolicy, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<SESV2EndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-shield/include/aws/shield/ShieldClient.h b/generated/src/aws-cpp-sdk-shield/include/aws/shield/ShieldClient.h
index 003cbcda6d67..cbfd0e7a3fee 100644
--- a/generated/src/aws-cpp-sdk-shield/include/aws/shield/ShieldClient.h
+++ b/generated/src/aws-cpp-sdk-shield/include/aws/shield/ShieldClient.h
@@ -1183,7 +1183,7 @@ class AWS_SHIELD_API ShieldClient : public Aws::Client::AWSJsonClient, public Aw
     return SubmitAsync(&ShieldClient::UpdateSubscription, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<ShieldEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-signer/include/aws/signer/SignerClient.h b/generated/src/aws-cpp-sdk-signer/include/aws/signer/SignerClient.h
index 0426095c7771..be8bd4f291be 100644
--- a/generated/src/aws-cpp-sdk-signer/include/aws/signer/SignerClient.h
+++ b/generated/src/aws-cpp-sdk-signer/include/aws/signer/SignerClient.h
@@ -658,7 +658,7 @@ class AWS_SIGNER_API SignerClient : public Aws::Client::AWSJsonClient, public Aw
     return SubmitAsync(&SignerClient::UntagResource, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<SignerEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-signin/include/aws/signin/SigninClient.h b/generated/src/aws-cpp-sdk-signin/include/aws/signin/SigninClient.h
index d5bd853e3c42..59ba4913a49f 100644
--- a/generated/src/aws-cpp-sdk-signin/include/aws/signin/SigninClient.h
+++ b/generated/src/aws-cpp-sdk-signin/include/aws/signin/SigninClient.h
@@ -119,7 +119,7 @@ class AWS_SIGNIN_API SigninClient : public Aws::Client::AWSJsonClient, public Aw
     return SubmitAsync(&SigninClient::CreateOAuth2Token, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<SigninEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-simspaceweaver/include/aws/simspaceweaver/SimSpaceWeaverClient.h b/generated/src/aws-cpp-sdk-simspaceweaver/include/aws/simspaceweaver/SimSpaceWeaverClient.h
index cb7af2a49a0f..4566c3162da6 100644
--- a/generated/src/aws-cpp-sdk-simspaceweaver/include/aws/simspaceweaver/SimSpaceWeaverClient.h
+++ b/generated/src/aws-cpp-sdk-simspaceweaver/include/aws/simspaceweaver/SimSpaceWeaverClient.h
@@ -536,7 +536,7 @@ class AWS_SIMSPACEWEAVER_API SimSpaceWeaverClient : public Aws::Client::AWSJsonC
     return SubmitAsync(&SimSpaceWeaverClient::UntagResource, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<SimSpaceWeaverEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-sms-voice/include/aws/sms-voice/PinpointSMSVoiceClient.h b/generated/src/aws-cpp-sdk-sms-voice/include/aws/sms-voice/PinpointSMSVoiceClient.h
index 3e038d65cafd..66bf5dc4a1ca 100644
--- a/generated/src/aws-cpp-sdk-sms-voice/include/aws/sms-voice/PinpointSMSVoiceClient.h
+++ b/generated/src/aws-cpp-sdk-sms-voice/include/aws/sms-voice/PinpointSMSVoiceClient.h
@@ -307,7 +307,7 @@ class AWS_PINPOINTSMSVOICE_API PinpointSMSVoiceClient : public Aws::Client::AWSJ
     return SubmitAsync(&PinpointSMSVoiceClient::UpdateConfigurationSetEventDestination, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<PinpointSMSVoiceEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-snow-device-management/include/aws/snow-device-management/SnowDeviceManagementClient.h b/generated/src/aws-cpp-sdk-snow-device-management/include/aws/snow-device-management/SnowDeviceManagementClient.h
index bcc38c02edee..b17a0e68f1f5 100644
--- a/generated/src/aws-cpp-sdk-snow-device-management/include/aws/snow-device-management/SnowDeviceManagementClient.h
+++ b/generated/src/aws-cpp-sdk-snow-device-management/include/aws/snow-device-management/SnowDeviceManagementClient.h
@@ -428,7 +428,7 @@ class AWS_SNOWDEVICEMANAGEMENT_API SnowDeviceManagementClient
     return SubmitAsync(&SnowDeviceManagementClient::UntagResource, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<SnowDeviceManagementEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-snowball/include/aws/snowball/SnowballClient.h b/generated/src/aws-cpp-sdk-snowball/include/aws/snowball/SnowballClient.h
index 84c53a90a091..afaff9f68533 100644
--- a/generated/src/aws-cpp-sdk-snowball/include/aws/snowball/SnowballClient.h
+++ b/generated/src/aws-cpp-sdk-snowball/include/aws/snowball/SnowballClient.h
@@ -908,7 +908,7 @@ class AWS_SNOWBALL_API SnowballClient : public Aws::Client::AWSJsonClient,
     return SubmitAsync(&SnowballClient::UpdateLongTermPricing, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<SnowballEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-sns/include/aws/sns/SNSClient.h b/generated/src/aws-cpp-sdk-sns/include/aws/sns/SNSClient.h
index 5b8c7d8ffcb2..91b284bd88f2 100644
--- a/generated/src/aws-cpp-sdk-sns/include/aws/sns/SNSClient.h
+++ b/generated/src/aws-cpp-sdk-sns/include/aws/sns/SNSClient.h
@@ -1523,7 +1523,7 @@ class AWS_SNS_API SNSClient : public Aws::Client::AWSXMLClient, public Aws::Clie
     return SubmitAsync(&SNSClient::VerifySMSSandboxPhoneNumber, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<SNSEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-socialmessaging/include/aws/socialmessaging/SocialMessagingClient.h b/generated/src/aws-cpp-sdk-socialmessaging/include/aws/socialmessaging/SocialMessagingClient.h
index 28c21d38f446..73b4c0114c73 100644
--- a/generated/src/aws-cpp-sdk-socialmessaging/include/aws/socialmessaging/SocialMessagingClient.h
+++ b/generated/src/aws-cpp-sdk-socialmessaging/include/aws/socialmessaging/SocialMessagingClient.h
@@ -743,7 +743,7 @@ class AWS_SOCIALMESSAGING_API SocialMessagingClient : public Aws::Client::AWSJso
     return SubmitAsync(&SocialMessagingClient::UpdateWhatsAppMessageTemplate, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<SocialMessagingEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-sqs/include/aws/sqs/SQSClient.h b/generated/src/aws-cpp-sdk-sqs/include/aws/sqs/SQSClient.h
index f38dd08ca7a6..1908e5901193 100644
--- a/generated/src/aws-cpp-sdk-sqs/include/aws/sqs/SQSClient.h
+++ b/generated/src/aws-cpp-sdk-sqs/include/aws/sqs/SQSClient.h
@@ -1034,7 +1034,7 @@ class AWS_SQS_API SQSClient : public Aws::Client::AWSJsonClient, public Aws::Cli
     return SubmitAsync(&SQSClient::UntagQueue, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<SQSEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-ssm-contacts/include/aws/ssm-contacts/SSMContactsClient.h b/generated/src/aws-cpp-sdk-ssm-contacts/include/aws/ssm-contacts/SSMContactsClient.h
index 1807c525db81..fceba640acbf 100644
--- a/generated/src/aws-cpp-sdk-ssm-contacts/include/aws/ssm-contacts/SSMContactsClient.h
+++ b/generated/src/aws-cpp-sdk-ssm-contacts/include/aws/ssm-contacts/SSMContactsClient.h
@@ -1144,7 +1144,7 @@ class AWS_SSMCONTACTS_API SSMContactsClient : public Aws::Client::AWSJsonClient,
     return SubmitAsync(&SSMContactsClient::UpdateRotation, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<SSMContactsEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-ssm-guiconnect/include/aws/ssm-guiconnect/SSMGuiConnectClient.h b/generated/src/aws-cpp-sdk-ssm-guiconnect/include/aws/ssm-guiconnect/SSMGuiConnectClient.h
index f04a7e632785..2b6ae90feccc 100644
--- a/generated/src/aws-cpp-sdk-ssm-guiconnect/include/aws/ssm-guiconnect/SSMGuiConnectClient.h
+++ b/generated/src/aws-cpp-sdk-ssm-guiconnect/include/aws/ssm-guiconnect/SSMGuiConnectClient.h
@@ -183,7 +183,7 @@ class AWS_SSMGUICONNECT_API SSMGuiConnectClient : public Aws::Client::AWSJsonCli
     return SubmitAsync(&SSMGuiConnectClient::UpdateConnectionRecordingPreferences, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<SSMGuiConnectEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-ssm-incidents/include/aws/ssm-incidents/SSMIncidentsClient.h b/generated/src/aws-cpp-sdk-ssm-incidents/include/aws/ssm-incidents/SSMIncidentsClient.h
index 0796ed8b2f4c..d02b8bcc7161 100644
--- a/generated/src/aws-cpp-sdk-ssm-incidents/include/aws/ssm-incidents/SSMIncidentsClient.h
+++ b/generated/src/aws-cpp-sdk-ssm-incidents/include/aws/ssm-incidents/SSMIncidentsClient.h
@@ -931,7 +931,7 @@ class AWS_SSMINCIDENTS_API SSMIncidentsClient : public Aws::Client::AWSJsonClien
     return SubmitAsync(&SSMIncidentsClient::UpdateTimelineEvent, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<SSMIncidentsEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-ssm-quicksetup/include/aws/ssm-quicksetup/SSMQuickSetupClient.h b/generated/src/aws-cpp-sdk-ssm-quicksetup/include/aws/ssm-quicksetup/SSMQuickSetupClient.h
index 56776641cc1d..5e56938aea7d 100644
--- a/generated/src/aws-cpp-sdk-ssm-quicksetup/include/aws/ssm-quicksetup/SSMQuickSetupClient.h
+++ b/generated/src/aws-cpp-sdk-ssm-quicksetup/include/aws/ssm-quicksetup/SSMQuickSetupClient.h
@@ -466,7 +466,7 @@ class AWS_SSMQUICKSETUP_API SSMQuickSetupClient : public Aws::Client::AWSJsonCli
     return SubmitAsync(&SSMQuickSetupClient::UpdateServiceSettings, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<SSMQuickSetupEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-ssm-sap/include/aws/ssm-sap/SsmSapClient.h b/generated/src/aws-cpp-sdk-ssm-sap/include/aws/ssm-sap/SsmSapClient.h
index 66338789c078..accd59f4f4af 100644
--- a/generated/src/aws-cpp-sdk-ssm-sap/include/aws/ssm-sap/SsmSapClient.h
+++ b/generated/src/aws-cpp-sdk-ssm-sap/include/aws/ssm-sap/SsmSapClient.h
@@ -818,7 +818,7 @@ class AWS_SSMSAP_API SsmSapClient : public Aws::Client::AWSJsonClient, public Aw
     return SubmitAsync(&SsmSapClient::UpdateApplicationSettings, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<SsmSapEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-ssm/include/aws/ssm/SSMClient.h b/generated/src/aws-cpp-sdk-ssm/include/aws/ssm/SSMClient.h
index 3fe061d9e3bb..cdc1fca413e7 100644
--- a/generated/src/aws-cpp-sdk-ssm/include/aws/ssm/SSMClient.h
+++ b/generated/src/aws-cpp-sdk-ssm/include/aws/ssm/SSMClient.h
@@ -4765,7 +4765,7 @@ class AWS_SSM_API SSMClient : public Aws::Client::AWSJsonClient, public Aws::Cli
     return SubmitAsync(&SSMClient::UpdateServiceSetting, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<SSMEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-sso-admin/include/aws/sso-admin/SSOAdminClient.h b/generated/src/aws-cpp-sdk-sso-admin/include/aws/sso-admin/SSOAdminClient.h
index 4f115bd473de..289ae2eb87a6 100644
--- a/generated/src/aws-cpp-sdk-sso-admin/include/aws/sso-admin/SSOAdminClient.h
+++ b/generated/src/aws-cpp-sdk-sso-admin/include/aws/sso-admin/SSOAdminClient.h
@@ -2575,7 +2575,7 @@ class AWS_SSOADMIN_API SSOAdminClient : public Aws::Client::AWSJsonClient,
     return SubmitAsync(&SSOAdminClient::UpdateTrustedTokenIssuer, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<SSOAdminEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-sso-oidc/include/aws/sso-oidc/SSOOIDCClient.h b/generated/src/aws-cpp-sdk-sso-oidc/include/aws/sso-oidc/SSOOIDCClient.h
index 37c7090c4aff..aa45b5299998 100644
--- a/generated/src/aws-cpp-sdk-sso-oidc/include/aws/sso-oidc/SSOOIDCClient.h
+++ b/generated/src/aws-cpp-sdk-sso-oidc/include/aws/sso-oidc/SSOOIDCClient.h
@@ -223,7 +223,7 @@ class AWS_SSOOIDC_API SSOOIDCClient : public Aws::Client::AWSJsonClient, public
     return SubmitAsync(&SSOOIDCClient::StartDeviceAuthorization, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<SSOOIDCEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-sso/include/aws/sso/SSOClient.h b/generated/src/aws-cpp-sdk-sso/include/aws/sso/SSOClient.h
index e735725c8f77..05972d16e869 100644
--- a/generated/src/aws-cpp-sdk-sso/include/aws/sso/SSOClient.h
+++ b/generated/src/aws-cpp-sdk-sso/include/aws/sso/SSOClient.h
@@ -207,7 +207,7 @@ class AWS_SSO_API SSOClient : public Aws::Client::AWSJsonClient, public Aws::Cli
     return SubmitAsync(&SSOClient::Logout, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<SSOEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-states/include/aws/states/SFNClient.h b/generated/src/aws-cpp-sdk-states/include/aws/states/SFNClient.h
index 0f8351272009..bf5ebfdee491 100644
--- a/generated/src/aws-cpp-sdk-states/include/aws/states/SFNClient.h
+++ b/generated/src/aws-cpp-sdk-states/include/aws/states/SFNClient.h
@@ -1574,7 +1574,7 @@ class AWS_SFN_API SFNClient : public Aws::Client::AWSJsonClient, public Aws::Cli
     return SubmitAsync(&SFNClient::ValidateStateMachineDefinition, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<SFNEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-storagegateway/include/aws/storagegateway/StorageGatewayClient.h b/generated/src/aws-cpp-sdk-storagegateway/include/aws/storagegateway/StorageGatewayClient.h
index 9613335e863f..8722d79dcedd 100644
--- a/generated/src/aws-cpp-sdk-storagegateway/include/aws/storagegateway/StorageGatewayClient.h
+++ b/generated/src/aws-cpp-sdk-storagegateway/include/aws/storagegateway/StorageGatewayClient.h
@@ -3296,7 +3296,7 @@ class AWS_STORAGEGATEWAY_API StorageGatewayClient : public Aws::Client::AWSJsonC
     return SubmitAsync(&StorageGatewayClient::UpdateVTLDeviceType, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<StorageGatewayEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-sts/include/aws/sts/STSClient.h b/generated/src/aws-cpp-sdk-sts/include/aws/sts/STSClient.h
index 327e7d7918c3..b96afa38900d 100644
--- a/generated/src/aws-cpp-sdk-sts/include/aws/sts/STSClient.h
+++ b/generated/src/aws-cpp-sdk-sts/include/aws/sts/STSClient.h
@@ -908,7 +908,7 @@ class AWS_STS_API STSClient : public Aws::Client::AWSXMLClient, public Aws::Clie
     return SubmitAsync(&STSClient::GetWebIdentityToken, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<STSEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-supplychain/include/aws/supplychain/SupplyChainClient.h b/generated/src/aws-cpp-sdk-supplychain/include/aws/supplychain/SupplyChainClient.h
index 575422b608bb..89dc651cde39 100644
--- a/generated/src/aws-cpp-sdk-supplychain/include/aws/supplychain/SupplyChainClient.h
+++ b/generated/src/aws-cpp-sdk-supplychain/include/aws/supplychain/SupplyChainClient.h
@@ -977,7 +977,7 @@ class AWS_SUPPLYCHAIN_API SupplyChainClient : public Aws::Client::AWSJsonClient,
     return SubmitAsync(&SupplyChainClient::UpdateInstance, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<SupplyChainEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-support-app/include/aws/support-app/SupportAppClient.h b/generated/src/aws-cpp-sdk-support-app/include/aws/support-app/SupportAppClient.h
index 1bb95ecc905a..0a3c84a8cb43 100644
--- a/generated/src/aws-cpp-sdk-support-app/include/aws/support-app/SupportAppClient.h
+++ b/generated/src/aws-cpp-sdk-support-app/include/aws/support-app/SupportAppClient.h
@@ -436,7 +436,7 @@ class AWS_SUPPORTAPP_API SupportAppClient : public Aws::Client::AWSJsonClient,
     return SubmitAsync(&SupportAppClient::UpdateSlackChannelConfiguration, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<SupportAppEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-support/include/aws/support/SupportClient.h b/generated/src/aws-cpp-sdk-support/include/aws/support/SupportClient.h
index e507586d62be..8919fa213506 100644
--- a/generated/src/aws-cpp-sdk-support/include/aws/support/SupportClient.h
+++ b/generated/src/aws-cpp-sdk-support/include/aws/support/SupportClient.h
@@ -802,7 +802,7 @@ class AWS_SUPPORT_API SupportClient : public Aws::Client::AWSJsonClient, public
     return SubmitAsync(&SupportClient::ResolveCase, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<SupportEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-swf/include/aws/swf/SWFClient.h b/generated/src/aws-cpp-sdk-swf/include/aws/swf/SWFClient.h
index 68a872c6be0c..4d13e83832b8 100644
--- a/generated/src/aws-cpp-sdk-swf/include/aws/swf/SWFClient.h
+++ b/generated/src/aws-cpp-sdk-swf/include/aws/swf/SWFClient.h
@@ -1914,7 +1914,7 @@ class AWS_SWF_API SWFClient : public Aws::Client::AWSJsonClient, public Aws::Cli
     return SubmitAsync(&SWFClient::UntagResource, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<SWFEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-synthetics/include/aws/synthetics/SyntheticsClient.h b/generated/src/aws-cpp-sdk-synthetics/include/aws/synthetics/SyntheticsClient.h
index 198f9a6bc816..2f258add85a6 100644
--- a/generated/src/aws-cpp-sdk-synthetics/include/aws/synthetics/SyntheticsClient.h
+++ b/generated/src/aws-cpp-sdk-synthetics/include/aws/synthetics/SyntheticsClient.h
@@ -780,7 +780,7 @@ class AWS_SYNTHETICS_API SyntheticsClient : public Aws::Client::AWSJsonClient,
     return SubmitAsync(&SyntheticsClient::UpdateCanary, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<SyntheticsEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-taxsettings/include/aws/taxsettings/TaxSettingsClient.h b/generated/src/aws-cpp-sdk-taxsettings/include/aws/taxsettings/TaxSettingsClient.h
index 58fe7c4d2ff1..abd2e5190245 100644
--- a/generated/src/aws-cpp-sdk-taxsettings/include/aws/taxsettings/TaxSettingsClient.h
+++ b/generated/src/aws-cpp-sdk-taxsettings/include/aws/taxsettings/TaxSettingsClient.h
@@ -774,7 +774,7 @@ class AWS_TAXSETTINGS_API TaxSettingsClient : public Aws::Client::AWSJsonClient,
     return SubmitAsync(&TaxSettingsClient::PutTaxRegistration, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<TaxSettingsEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-textract/include/aws/textract/TextractClient.h b/generated/src/aws-cpp-sdk-textract/include/aws/textract/TextractClient.h
index b595ac530326..bdd7450f65ac 100644
--- a/generated/src/aws-cpp-sdk-textract/include/aws/textract/TextractClient.h
+++ b/generated/src/aws-cpp-sdk-textract/include/aws/textract/TextractClient.h
@@ -984,7 +984,7 @@ class AWS_TEXTRACT_API TextractClient : public Aws::Client::AWSJsonClient,
     return SubmitAsync(&TextractClient::UpdateAdapter, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<TextractEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-timestream-influxdb/include/aws/timestream-influxdb/TimestreamInfluxDBClient.h b/generated/src/aws-cpp-sdk-timestream-influxdb/include/aws/timestream-influxdb/TimestreamInfluxDBClient.h
index 1405bf3cdb87..efe453a66401 100644
--- a/generated/src/aws-cpp-sdk-timestream-influxdb/include/aws/timestream-influxdb/TimestreamInfluxDBClient.h
+++ b/generated/src/aws-cpp-sdk-timestream-influxdb/include/aws/timestream-influxdb/TimestreamInfluxDBClient.h
@@ -579,7 +579,7 @@ class AWS_TIMESTREAMINFLUXDB_API TimestreamInfluxDBClient : public Aws::Client::
     return SubmitAsync(&TimestreamInfluxDBClient::UpdateDbInstance, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<TimestreamInfluxDBEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-timestream-query/include/aws/timestream-query/TimestreamQueryClient.h b/generated/src/aws-cpp-sdk-timestream-query/include/aws/timestream-query/TimestreamQueryClient.h
index 469798bc60c7..fad47f557269 100644
--- a/generated/src/aws-cpp-sdk-timestream-query/include/aws/timestream-query/TimestreamQueryClient.h
+++ b/generated/src/aws-cpp-sdk-timestream-query/include/aws/timestream-query/TimestreamQueryClient.h
@@ -538,7 +538,7 @@ class AWS_TIMESTREAMQUERY_API TimestreamQueryClient : public Aws::Client::AWSJso
     return SubmitAsync(&TimestreamQueryClient::UpdateScheduledQuery, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<TimestreamQueryEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-timestream-write/include/aws/timestream-write/TimestreamWriteClient.h b/generated/src/aws-cpp-sdk-timestream-write/include/aws/timestream-write/TimestreamWriteClient.h
index 4016f910b272..238a6b355cbb 100644
--- a/generated/src/aws-cpp-sdk-timestream-write/include/aws/timestream-write/TimestreamWriteClient.h
+++ b/generated/src/aws-cpp-sdk-timestream-write/include/aws/timestream-write/TimestreamWriteClient.h
@@ -711,7 +711,7 @@ class AWS_TIMESTREAMWRITE_API TimestreamWriteClient : public Aws::Client::AWSJso
     return SubmitAsync(&TimestreamWriteClient::WriteRecords, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<TimestreamWriteEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-tnb/include/aws/tnb/TnbClient.h b/generated/src/aws-cpp-sdk-tnb/include/aws/tnb/TnbClient.h
index c0e239242415..8cd35715cb11 100644
--- a/generated/src/aws-cpp-sdk-tnb/include/aws/tnb/TnbClient.h
+++ b/generated/src/aws-cpp-sdk-tnb/include/aws/tnb/TnbClient.h
@@ -1134,7 +1134,7 @@ class AWS_TNB_API TnbClient : public Aws::Client::AWSJsonClient, public Aws::Cli
     return SubmitAsync(&TnbClient::ValidateSolNetworkPackageContent, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<TnbEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-transcribe/include/aws/transcribe/TranscribeServiceClient.h b/generated/src/aws-cpp-sdk-transcribe/include/aws/transcribe/TranscribeServiceClient.h
index df9c5600f9f9..f5767ae4f6a3 100644
--- a/generated/src/aws-cpp-sdk-transcribe/include/aws/transcribe/TranscribeServiceClient.h
+++ b/generated/src/aws-cpp-sdk-transcribe/include/aws/transcribe/TranscribeServiceClient.h
@@ -1538,7 +1538,7 @@ class AWS_TRANSCRIBESERVICE_API TranscribeServiceClient : public Aws::Client::AW
     return SubmitAsync(&TranscribeServiceClient::UpdateVocabularyFilter, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<TranscribeServiceEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-transcribestreaming/include/aws/transcribestreaming/TranscribeStreamingServiceClient.h b/generated/src/aws-cpp-sdk-transcribestreaming/include/aws/transcribestreaming/TranscribeStreamingServiceClient.h
index 0d3f0a5ab478..04910012cee4 100644
--- a/generated/src/aws-cpp-sdk-transcribestreaming/include/aws/transcribestreaming/TranscribeStreamingServiceClient.h
+++ b/generated/src/aws-cpp-sdk-transcribestreaming/include/aws/transcribestreaming/TranscribeStreamingServiceClient.h
@@ -233,7 +233,7 @@ class AWS_TRANSCRIBESTREAMINGSERVICE_API TranscribeStreamingServiceClient
                                              const StartStreamTranscriptionResponseReceivedHandler& handler,
                                              const std::shared_ptr<const Aws::Client::AsyncCallerContext>& handlerContext = nullptr) const;
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<TranscribeStreamingServiceEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-translate/include/aws/translate/TranslateClient.h b/generated/src/aws-cpp-sdk-translate/include/aws/translate/TranslateClient.h
index df79781497fe..5e38b266d8e7 100644
--- a/generated/src/aws-cpp-sdk-translate/include/aws/translate/TranslateClient.h
+++ b/generated/src/aws-cpp-sdk-translate/include/aws/translate/TranslateClient.h
@@ -630,7 +630,7 @@ class AWS_TRANSLATE_API TranslateClient : public Aws::Client::AWSJsonClient,
     return SubmitAsync(&TranslateClient::UpdateParallelData, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<TranslateEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-trustedadvisor/include/aws/trustedadvisor/TrustedAdvisorClient.h b/generated/src/aws-cpp-sdk-trustedadvisor/include/aws/trustedadvisor/TrustedAdvisorClient.h
index 683d56520950..edc075265c0e 100644
--- a/generated/src/aws-cpp-sdk-trustedadvisor/include/aws/trustedadvisor/TrustedAdvisorClient.h
+++ b/generated/src/aws-cpp-sdk-trustedadvisor/include/aws/trustedadvisor/TrustedAdvisorClient.h
@@ -396,7 +396,7 @@ class AWS_TRUSTEDADVISOR_API TrustedAdvisorClient : public Aws::Client::AWSJsonC
     return SubmitAsync(&TrustedAdvisorClient::UpdateRecommendationLifecycle, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<TrustedAdvisorEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-verifiedpermissions/include/aws/verifiedpermissions/VerifiedPermissionsClient.h b/generated/src/aws-cpp-sdk-verifiedpermissions/include/aws/verifiedpermissions/VerifiedPermissionsClient.h
index 21b9b38e776d..86cec2eb2084 100644
--- a/generated/src/aws-cpp-sdk-verifiedpermissions/include/aws/verifiedpermissions/VerifiedPermissionsClient.h
+++ b/generated/src/aws-cpp-sdk-verifiedpermissions/include/aws/verifiedpermissions/VerifiedPermissionsClient.h
@@ -1107,7 +1107,7 @@ class AWS_VERIFIEDPERMISSIONS_API VerifiedPermissionsClient
     return SubmitAsync(&VerifiedPermissionsClient::UpdatePolicyTemplate, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<VerifiedPermissionsEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-voice-id/include/aws/voice-id/VoiceIDClient.h b/generated/src/aws-cpp-sdk-voice-id/include/aws/voice-id/VoiceIDClient.h
index f1090a34b169..5242f8b8d596 100644
--- a/generated/src/aws-cpp-sdk-voice-id/include/aws/voice-id/VoiceIDClient.h
+++ b/generated/src/aws-cpp-sdk-voice-id/include/aws/voice-id/VoiceIDClient.h
@@ -861,7 +861,7 @@ class AWS_VOICEID_API VoiceIDClient : public Aws::Client::AWSJsonClient, public
     return SubmitAsync(&VoiceIDClient::UpdateWatchlist, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<VoiceIDEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-vpc-lattice/include/aws/vpc-lattice/VPCLatticeClient.h b/generated/src/aws-cpp-sdk-vpc-lattice/include/aws/vpc-lattice/VPCLatticeClient.h
index f49380b85f1f..8a133f4eb214 100644
--- a/generated/src/aws-cpp-sdk-vpc-lattice/include/aws/vpc-lattice/VPCLatticeClient.h
+++ b/generated/src/aws-cpp-sdk-vpc-lattice/include/aws/vpc-lattice/VPCLatticeClient.h
@@ -2202,7 +2202,7 @@ class AWS_VPCLATTICE_API VPCLatticeClient : public Aws::Client::AWSJsonClient,
     return SubmitAsync(&VPCLatticeClient::UpdateTargetGroup, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<VPCLatticeEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-waf-regional/include/aws/waf-regional/WAFRegionalClient.h b/generated/src/aws-cpp-sdk-waf-regional/include/aws/waf-regional/WAFRegionalClient.h
index 450596ad0cde..3bccb8a274eb 100644
--- a/generated/src/aws-cpp-sdk-waf-regional/include/aws/waf-regional/WAFRegionalClient.h
+++ b/generated/src/aws-cpp-sdk-waf-regional/include/aws/waf-regional/WAFRegionalClient.h
@@ -3650,7 +3650,7 @@ class AWS_WAFREGIONAL_API WAFRegionalClient : public Aws::Client::AWSJsonClient,
     return SubmitAsync(&WAFRegionalClient::UpdateXssMatchSet, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<WAFRegionalEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-waf/include/aws/waf/WAFClient.h b/generated/src/aws-cpp-sdk-waf/include/aws/waf/WAFClient.h
index a68dea294fcf..cbb3ba1410ff 100644
--- a/generated/src/aws-cpp-sdk-waf/include/aws/waf/WAFClient.h
+++ b/generated/src/aws-cpp-sdk-waf/include/aws/waf/WAFClient.h
@@ -3502,7 +3502,7 @@ class AWS_WAF_API WAFClient : public Aws::Client::AWSJsonClient, public Aws::Cli
     return SubmitAsync(&WAFClient::UpdateXssMatchSet, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<WAFEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-wafv2/include/aws/wafv2/WAFV2Client.h b/generated/src/aws-cpp-sdk-wafv2/include/aws/wafv2/WAFV2Client.h
index 5f454925019b..fbb3ce22b1a7 100644
--- a/generated/src/aws-cpp-sdk-wafv2/include/aws/wafv2/WAFV2Client.h
+++ b/generated/src/aws-cpp-sdk-wafv2/include/aws/wafv2/WAFV2Client.h
@@ -1923,7 +1923,7 @@ class AWS_WAFV2_API WAFV2Client : public Aws::Client::AWSJsonClient, public Aws:
     return SubmitAsync(&WAFV2Client::UpdateWebACL, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<WAFV2EndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-wellarchitected/include/aws/wellarchitected/WellArchitectedClient.h b/generated/src/aws-cpp-sdk-wellarchitected/include/aws/wellarchitected/WellArchitectedClient.h
index d74ee7ef8c13..448f6c3d8a4e 100644
--- a/generated/src/aws-cpp-sdk-wellarchitected/include/aws/wellarchitected/WellArchitectedClient.h
+++ b/generated/src/aws-cpp-sdk-wellarchitected/include/aws/wellarchitected/WellArchitectedClient.h
@@ -2108,7 +2108,7 @@ class AWS_WELLARCHITECTED_API WellArchitectedClient : public Aws::Client::AWSJso
     return SubmitAsync(&WellArchitectedClient::UpgradeReviewTemplateLensReview, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<WellArchitectedEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-wickr/include/aws/wickr/WickrClient.h b/generated/src/aws-cpp-sdk-wickr/include/aws/wickr/WickrClient.h
index 519fa2370937..f4d226ebbc41 100644
--- a/generated/src/aws-cpp-sdk-wickr/include/aws/wickr/WickrClient.h
+++ b/generated/src/aws-cpp-sdk-wickr/include/aws/wickr/WickrClient.h
@@ -1279,7 +1279,7 @@ class AWS_WICKR_API WickrClient : public Aws::Client::AWSJsonClient, public Aws:
     return SubmitAsync(&WickrClient::UpdateUser, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<WickrEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-wisdom/include/aws/wisdom/ConnectWisdomServiceClient.h b/generated/src/aws-cpp-sdk-wisdom/include/aws/wisdom/ConnectWisdomServiceClient.h
index f06d1e4557a3..a84ed68598d5 100644
--- a/generated/src/aws-cpp-sdk-wisdom/include/aws/wisdom/ConnectWisdomServiceClient.h
+++ b/generated/src/aws-cpp-sdk-wisdom/include/aws/wisdom/ConnectWisdomServiceClient.h
@@ -1159,7 +1159,7 @@ class AWS_CONNECTWISDOMSERVICE_API ConnectWisdomServiceClient
     return SubmitAsync(&ConnectWisdomServiceClient::UpdateQuickResponse, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<ConnectWisdomServiceEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-workdocs/include/aws/workdocs/WorkDocsClient.h b/generated/src/aws-cpp-sdk-workdocs/include/aws/workdocs/WorkDocsClient.h
index 2e2ea4850e99..935534e4edde 100644
--- a/generated/src/aws-cpp-sdk-workdocs/include/aws/workdocs/WorkDocsClient.h
+++ b/generated/src/aws-cpp-sdk-workdocs/include/aws/workdocs/WorkDocsClient.h
@@ -1338,7 +1338,7 @@ class AWS_WORKDOCS_API WorkDocsClient : public Aws::Client::AWSJsonClient,
     return SubmitAsync(&WorkDocsClient::UpdateUser, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<WorkDocsEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-workmail/include/aws/workmail/WorkMailClient.h b/generated/src/aws-cpp-sdk-workmail/include/aws/workmail/WorkMailClient.h
index 04da3cde3d88..bf1f694938a0 100644
--- a/generated/src/aws-cpp-sdk-workmail/include/aws/workmail/WorkMailClient.h
+++ b/generated/src/aws-cpp-sdk-workmail/include/aws/workmail/WorkMailClient.h
@@ -2736,7 +2736,7 @@ class AWS_WORKMAIL_API WorkMailClient : public Aws::Client::AWSJsonClient,
     return SubmitAsync(&WorkMailClient::UpdateUser, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<WorkMailEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-workmailmessageflow/include/aws/workmailmessageflow/WorkMailMessageFlowClient.h b/generated/src/aws-cpp-sdk-workmailmessageflow/include/aws/workmailmessageflow/WorkMailMessageFlowClient.h
index 412b2ba6d172..4029ff8113ea 100644
--- a/generated/src/aws-cpp-sdk-workmailmessageflow/include/aws/workmailmessageflow/WorkMailMessageFlowClient.h
+++ b/generated/src/aws-cpp-sdk-workmailmessageflow/include/aws/workmailmessageflow/WorkMailMessageFlowClient.h
@@ -141,7 +141,7 @@ class AWS_WORKMAILMESSAGEFLOW_API WorkMailMessageFlowClient
     return SubmitAsync(&WorkMailMessageFlowClient::PutRawMessageContent, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<WorkMailMessageFlowEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-workspaces-instances/include/aws/workspaces-instances/WorkspacesInstancesClient.h b/generated/src/aws-cpp-sdk-workspaces-instances/include/aws/workspaces-instances/WorkspacesInstancesClient.h
index 2d3b16734798..95e711d2d5c6 100644
--- a/generated/src/aws-cpp-sdk-workspaces-instances/include/aws/workspaces-instances/WorkspacesInstancesClient.h
+++ b/generated/src/aws-cpp-sdk-workspaces-instances/include/aws/workspaces-instances/WorkspacesInstancesClient.h
@@ -424,7 +424,7 @@ class AWS_WORKSPACESINSTANCES_API WorkspacesInstancesClient
     return SubmitAsync(&WorkspacesInstancesClient::UntagResource, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<WorkspacesInstancesEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-workspaces-thin-client/include/aws/workspaces-thin-client/WorkSpacesThinClientClient.h b/generated/src/aws-cpp-sdk-workspaces-thin-client/include/aws/workspaces-thin-client/WorkSpacesThinClientClient.h
index a8cbe2585db8..59741ba0c9d9 100644
--- a/generated/src/aws-cpp-sdk-workspaces-thin-client/include/aws/workspaces-thin-client/WorkSpacesThinClientClient.h
+++ b/generated/src/aws-cpp-sdk-workspaces-thin-client/include/aws/workspaces-thin-client/WorkSpacesThinClientClient.h
@@ -505,7 +505,7 @@ class AWS_WORKSPACESTHINCLIENT_API WorkSpacesThinClientClient
     return SubmitAsync(&WorkSpacesThinClientClient::UpdateSoftwareSet, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<WorkSpacesThinClientEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-workspaces-web/include/aws/workspaces-web/WorkSpacesWebClient.h b/generated/src/aws-cpp-sdk-workspaces-web/include/aws/workspaces-web/WorkSpacesWebClient.h
index 0553577a5526..dda087f3e825 100644
--- a/generated/src/aws-cpp-sdk-workspaces-web/include/aws/workspaces-web/WorkSpacesWebClient.h
+++ b/generated/src/aws-cpp-sdk-workspaces-web/include/aws/workspaces-web/WorkSpacesWebClient.h
@@ -2134,7 +2134,7 @@ class AWS_WORKSPACESWEB_API WorkSpacesWebClient : public Aws::Client::AWSJsonCli
     return SubmitAsync(&WorkSpacesWebClient::UpdateUserSettings, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<WorkSpacesWebEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-workspaces/include/aws/workspaces/WorkSpacesClient.h b/generated/src/aws-cpp-sdk-workspaces/include/aws/workspaces/WorkSpacesClient.h
index afe7db69be94..b98edd70e0f2 100644
--- a/generated/src/aws-cpp-sdk-workspaces/include/aws/workspaces/WorkSpacesClient.h
+++ b/generated/src/aws-cpp-sdk-workspaces/include/aws/workspaces/WorkSpacesClient.h
@@ -2913,7 +2913,7 @@ class AWS_WORKSPACES_API WorkSpacesClient : public Aws::Client::AWSJsonClient,
     return SubmitAsync(&WorkSpacesClient::UpdateWorkspacesPool, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<WorkSpacesEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/generated/src/aws-cpp-sdk-xray/include/aws/xray/XRayClient.h b/generated/src/aws-cpp-sdk-xray/include/aws/xray/XRayClient.h
index d22c112d156b..cf6a2e7a0b89 100644
--- a/generated/src/aws-cpp-sdk-xray/include/aws/xray/XRayClient.h
+++ b/generated/src/aws-cpp-sdk-xray/include/aws/xray/XRayClient.h
@@ -1237,7 +1237,7 @@ class AWS_XRAY_API XRayClient : public Aws::Client::AWSJsonClient, public Aws::C
     return SubmitAsync(&XRayClient::UpdateTraceSegmentDestination, request, handler, context);
   }
 
-  void OverrideEndpoint(const Aws::String& endpoint);
+  virtual void OverrideEndpoint(const Aws::String& endpoint);
   std::shared_ptr<XRayEndpointProviderBase>& accessEndpointProvider();
 
  private:
diff --git a/tools/code-generation/generator/src/main/resources/com/amazonaws/util/awsclientgenerator/velocity/cpp/cbor/CborServiceClientHeader.vm b/tools/code-generation/generator/src/main/resources/com/amazonaws/util/awsclientgenerator/velocity/cpp/cbor/CborServiceClientHeader.vm
index 289ef9600987..8a972c3b5ef5 100644
--- a/tools/code-generation/generator/src/main/resources/com/amazonaws/util/awsclientgenerator/velocity/cpp/cbor/CborServiceClientHeader.vm
+++ b/tools/code-generation/generator/src/main/resources/com/amazonaws/util/awsclientgenerator/velocity/cpp/cbor/CborServiceClientHeader.vm
@@ -39,7 +39,7 @@ static const char* GetAllocationTag();
 Aws::Utils::Outcome<String, ${metadata.classNamePrefix}Error> ${presigner.functionName}(const Aws::String& ${presigner.hostNameVarName}, const Aws::String& ${presigner.regionVarName},#foreach($arg in $presigner.queryParams)#if(${arg.variableName}) ${arg.type} ${arg.variableName},#end#end long long expiresIn = 900);
 #end
 
-void OverrideEndpoint(const Aws::String& endpoint);
+virtual void OverrideEndpoint(const Aws::String& endpoint);
 #if($serviceModel.endpointRules)
 std::shared_ptr<${metadata.classNamePrefix}EndpointProviderBase>& accessEndpointProvider();
 #end
diff --git a/tools/code-generation/generator/src/main/resources/com/amazonaws/util/awsclientgenerator/velocity/cpp/json/JsonServiceClientHeader.vm b/tools/code-generation/generator/src/main/resources/com/amazonaws/util/awsclientgenerator/velocity/cpp/json/JsonServiceClientHeader.vm
index afc2578fc11e..5cdfa695e13f 100644
--- a/tools/code-generation/generator/src/main/resources/com/amazonaws/util/awsclientgenerator/velocity/cpp/json/JsonServiceClientHeader.vm
+++ b/tools/code-generation/generator/src/main/resources/com/amazonaws/util/awsclientgenerator/velocity/cpp/json/JsonServiceClientHeader.vm
@@ -39,7 +39,7 @@ namespace ${serviceNamespace}
         Aws::Utils::Outcome<String, ${metadata.classNamePrefix}Error> ${presigner.functionName}(const Aws::String& ${presigner.hostNameVarName}, const Aws::String& ${presigner.regionVarName},#foreach($arg in $presigner.queryParams)#if(${arg.variableName}) ${arg.type} ${arg.variableName},#end#end long long expiresIn = 900);
 #end
 
-      void OverrideEndpoint(const Aws::String& endpoint);
+      virtual void OverrideEndpoint(const Aws::String& endpoint);
 #if($serviceModel.endpointRules)
       std::shared_ptr<${metadata.classNamePrefix}EndpointProviderBase>& accessEndpointProvider();
 #end
diff --git a/tools/code-generation/generator/src/main/resources/com/amazonaws/util/awsclientgenerator/velocity/cpp/rds/RDSClientHeader.vm b/tools/code-generation/generator/src/main/resources/com/amazonaws/util/awsclientgenerator/velocity/cpp/rds/RDSClientHeader.vm
index 6ec45ddaa2e4..cbf70c135260 100644
--- a/tools/code-generation/generator/src/main/resources/com/amazonaws/util/awsclientgenerator/velocity/cpp/rds/RDSClientHeader.vm
+++ b/tools/code-generation/generator/src/main/resources/com/amazonaws/util/awsclientgenerator/velocity/cpp/rds/RDSClientHeader.vm
@@ -51,7 +51,7 @@ namespace ${rootNamespace}
     #end
     #parse("com/amazonaws/util/awsclientgenerator/velocity/cpp/ServiceClientHeaderOperations.vm")
 
-        void OverrideEndpoint(const Aws::String& endpoint);
+        virtual void OverrideEndpoint(const Aws::String& endpoint);
 #if($serviceModel.endpointRules)
         std::shared_ptr<${metadata.classNamePrefix}EndpointProviderBase>& accessEndpointProvider();
 #end
diff --git a/tools/code-generation/generator/src/main/resources/com/amazonaws/util/awsclientgenerator/velocity/cpp/s3/S3ClientHeader.vm b/tools/code-generation/generator/src/main/resources/com/amazonaws/util/awsclientgenerator/velocity/cpp/s3/S3ClientHeader.vm
index fe7385b9efa5..c1a63d12de8c 100644
--- a/tools/code-generation/generator/src/main/resources/com/amazonaws/util/awsclientgenerator/velocity/cpp/s3/S3ClientHeader.vm
+++ b/tools/code-generation/generator/src/main/resources/com/amazonaws/util/awsclientgenerator/velocity/cpp/s3/S3ClientHeader.vm
@@ -189,7 +189,7 @@ namespace ${rootNamespace}
 
         virtual bool MultipartUploadSupported() const;
 
-        void OverrideEndpoint(const Aws::String& endpoint);
+        virtual void OverrideEndpoint(const Aws::String& endpoint);
 #if($serviceModel.endpointRules)
         std::shared_ptr<${metadata.classNamePrefix}EndpointProviderBase>& accessEndpointProvider();
 #end
@@ -209,8 +209,8 @@ namespace ${rootNamespace}
           Aws::UniquePtr<struct aws_s3_checksum_config> checksumConfig;
         };
 
-        Aws::Client::XmlOutcome GenerateXmlOutcome(const std::shared_ptr<Http::HttpResponse>& response) const;
-        Aws::Client::StreamOutcome GenerateStreamOutcome(const std::shared_ptr<Http::HttpResponse>& response) const;
+        virtual Aws::Client::XmlOutcome GenerateXmlOutcome(const std::shared_ptr<Http::HttpResponse>& response) const;
+        virtual Aws::Client::StreamOutcome GenerateStreamOutcome(const std::shared_ptr<Http::HttpResponse>& response) const;
 
     protected:
         void AddContentLengthToRequest(const std::shared_ptr<Aws::Http::HttpRequest>& httpRequest,
diff --git a/tools/code-generation/generator/src/main/resources/com/amazonaws/util/awsclientgenerator/velocity/cpp/s3/SmithyS3ClientHeader.vm b/tools/code-generation/generator/src/main/resources/com/amazonaws/util/awsclientgenerator/velocity/cpp/s3/SmithyS3ClientHeader.vm
index fdc2c1be5c86..a07d7976332c 100644
--- a/tools/code-generation/generator/src/main/resources/com/amazonaws/util/awsclientgenerator/velocity/cpp/s3/SmithyS3ClientHeader.vm
+++ b/tools/code-generation/generator/src/main/resources/com/amazonaws/util/awsclientgenerator/velocity/cpp/s3/SmithyS3ClientHeader.vm
@@ -213,7 +213,7 @@ namespace ${rootNamespace}
 
         virtual bool MultipartUploadSupported() const;
 
-        void OverrideEndpoint(const Aws::String& endpoint);
+        virtual void OverrideEndpoint(const Aws::String& endpoint);
 #if($serviceModel.endpointRules)
         std::shared_ptr<${metadata.classNamePrefix}EndpointProviderBase>& accessEndpointProvider();
 #end
@@ -233,8 +233,8 @@ namespace ${rootNamespace}
           Aws::UniquePtr<struct aws_s3_checksum_config> checksumConfig;
         };
 
-        Aws::Client::XmlOutcome GenerateXmlOutcome(const std::shared_ptr<Http::HttpResponse>& response) const;
-        Aws::Client::StreamOutcome GenerateStreamOutcome(const std::shared_ptr<Http::HttpResponse>& response) const;
+        virtual Aws::Client::XmlOutcome GenerateXmlOutcome(const std::shared_ptr<Http::HttpResponse>& response) const;
+        virtual Aws::Client::StreamOutcome GenerateStreamOutcome(const std::shared_ptr<Http::HttpResponse>& response) const;
 
 #end
     private:
diff --git a/tools/code-generation/generator/src/main/resources/com/amazonaws/util/awsclientgenerator/velocity/cpp/s3control/S3ControlClientHeader.vm b/tools/code-generation/generator/src/main/resources/com/amazonaws/util/awsclientgenerator/velocity/cpp/s3control/S3ControlClientHeader.vm
index e5197ddb40ea..92d3d3c0c6fc 100644
--- a/tools/code-generation/generator/src/main/resources/com/amazonaws/util/awsclientgenerator/velocity/cpp/s3control/S3ControlClientHeader.vm
+++ b/tools/code-generation/generator/src/main/resources/com/amazonaws/util/awsclientgenerator/velocity/cpp/s3control/S3ControlClientHeader.vm
@@ -58,7 +58,7 @@ namespace ${metadata.namespace}
 #parse("com/amazonaws/util/awsclientgenerator/velocity/cpp/ServiceClientHeaderConstructors.vm")
 #parse("com/amazonaws/util/awsclientgenerator/velocity/cpp/ServiceClientHeaderOperations.vm")
 
-        void OverrideEndpoint(const Aws::String& endpoint);
+        virtual void OverrideEndpoint(const Aws::String& endpoint);
 #if($serviceModel.endpointRules)
         std::shared_ptr<${metadata.classNamePrefix}EndpointProviderBase>& accessEndpointProvider();
 #end
diff --git a/tools/code-generation/generator/src/main/resources/com/amazonaws/util/awsclientgenerator/velocity/cpp/smithy/SmithyClientHeader.vm b/tools/code-generation/generator/src/main/resources/com/amazonaws/util/awsclientgenerator/velocity/cpp/smithy/SmithyClientHeader.vm
index da58148a0909..c165fdd37e72 100644
--- a/tools/code-generation/generator/src/main/resources/com/amazonaws/util/awsclientgenerator/velocity/cpp/smithy/SmithyClientHeader.vm
+++ b/tools/code-generation/generator/src/main/resources/com/amazonaws/util/awsclientgenerator/velocity/cpp/smithy/SmithyClientHeader.vm
@@ -85,7 +85,7 @@ namespace ${serviceNamespace}
 #foreach($presigner in $serviceModel.presigners)
         Aws::Utils::Outcome<String, ${metadata.classNamePrefix}Error> ${presigner.functionName}(const Aws::String& ${presigner.hostNameVarName}, const Aws::String& ${presigner.regionVarName},#foreach($arg in $presigner.queryParams)#if(${arg.variableName}) ${arg.type} ${arg.variableName},#end#end long long expiresIn = 900);
 #end
-      void OverrideEndpoint(const ${rootNamespace}::String& endpoint);
+      virtual void OverrideEndpoint(const ${rootNamespace}::String& endpoint);
       std::shared_ptr<${metadata.classNamePrefix}EndpointProviderBase>& accessEndpointProvider();
     private:
       friend class ${rootNamespace}::Client::ClientWithAsyncTemplateMethods<${className}>;
diff --git a/tools/code-generation/generator/src/main/resources/com/amazonaws/util/awsclientgenerator/velocity/cpp/xml/XmlServiceClientHeader.vm b/tools/code-generation/generator/src/main/resources/com/amazonaws/util/awsclientgenerator/velocity/cpp/xml/XmlServiceClientHeader.vm
index 9112307c5039..e4cca9d479eb 100644
--- a/tools/code-generation/generator/src/main/resources/com/amazonaws/util/awsclientgenerator/velocity/cpp/xml/XmlServiceClientHeader.vm
+++ b/tools/code-generation/generator/src/main/resources/com/amazonaws/util/awsclientgenerator/velocity/cpp/xml/XmlServiceClientHeader.vm
@@ -46,7 +46,7 @@ namespace ${serviceNamespace}
 #end
 #parse("com/amazonaws/util/awsclientgenerator/velocity/cpp/ServiceClientHeaderOperations.vm")
 
-        void OverrideEndpoint(const Aws::String& endpoint);
+        virtual void OverrideEndpoint(const Aws::String& endpoint);
 #if($serviceModel.endpointRules)
         std::shared_ptr<${metadata.classNamePrefix}EndpointProviderBase>& accessEndpointProvider();
 #end