fix: response models

Author: Justintime50

src/main/java/com/easypost/model/FedExAccountValidationResponse.java

@@ -1,12 +1,18 @@
 package com.easypost.model;
 
 import java.util.Map;
-
 import lombok.Getter;
 
 @Getter
-public final class FedExAccountValidationResponse extends EasyPostResource {
+public final class FedExAccountValidationResponse {
+    // If the response contains the following, one must complete pin or invoice validation next
     private String emailAddress;
     private Map<String, String> options;
     private String phoneNumber;
+
+    // If the response contains the following, pre-validation has been completed
+    private String id;
+    private String object;
+    private String type;
+    private Map<String, String> credentials;
 }

src/main/java/com/easypost/model/FedExGeneratePinResponse.java

@@ -0,0 +1,8 @@
+package com.easypost.model;
+
+import lombok.Getter;
+
+@Getter
+public class FedExRequestPinResponse {
+    private String message;
+}

src/main/java/com/easypost/model/FedexRegistration.java

@@ -45,10 +45,10 @@ public FedExAccountValidationResponse registerAddress(final String fedexAccountN
      *
      * @param fedexAccountNumber The FedEx account number.
      * @param pinMethodOption The PIN delivery method: "SMS", "CALL", or "EMAIL".
-     * @return FedExAccountValidationResponse object confirming PIN was sent.
+     * @return FedExRequestPinResponse object confirming PIN was sent.
      * @throws EasyPostException when the request fails.
      */
-    public FedExAccountValidationResponse requestPin(final String fedexAccountNumber, final String pinMethodOption)
+    public FedExRequestPinResponse requestPin(final String fedexAccountNumber, final String pinMethodOption)
             throws EasyPostException {
         Map<String, Object> pinMethod = new HashMap<>();
         pinMethod.put("option", pinMethodOption);
@@ -64,10 +64,10 @@ public FedExAccountValidationResponse requestPin(final String fedexAccountNumber
      *
      * @param fedexAccountNumber The FedEx account number.
      * @param params Map of parameters.
-     * @return FedexRegistration object.
+     * @return FedExAccountValidationResponse object.
      * @throws EasyPostException when the request fails.
      */
-    public FedexRegistration validatePin(final String fedexAccountNumber, final Map<String, Object> params)
+    public FedExAccountValidationResponse validatePin(final String fedexAccountNumber, final Map<String, Object> params)
             throws EasyPostException {
         Map<String, Object> wrappedParams = wrapPinValidation(params);
         String endpoint = String.format("fedex_registrations/%s/pin/validate", fedexAccountNumber);
@@ -80,10 +80,10 @@ public FedexRegistration validatePin(final String fedexAccountNumber, final Map<
      *
      * @param fedexAccountNumber The FedEx account number.
      * @param params Map of parameters.
-     * @return FedexRegistration object.
+     * @return FedExAccountValidationResponse object.
      * @throws EasyPostException when the request fails.
      */
-    public FedexRegistration submitInvoice(final String fedexAccountNumber, final Map<String, Object> params)
+    public FedExAccountValidationResponse submitInvoice(final String fedexAccountNumber, final Map<String, Object> params)
             throws EasyPostException {
         Map<String, Object> wrappedParams = wrapInvoiceValidation(params);
         String endpoint = String.format("fedex_registrations/%s/invoice", fedexAccountNumber);