From b16dfcb6744b218f6dbc16eb984b3c9d04899056 Mon Sep 17 00:00:00 2001
From: A Vertex SDK engineer <vertex-sdk-bot@google.com>
Date: Mon, 23 Feb 2026 11:53:30 -0800
Subject: [PATCH] chore: Remove experimental label from Session Events.

PiperOrigin-RevId: 874184845
---
 vertexai/_genai/agent_engines.py | 12 +++++++++---
 vertexai/_genai/sessions.py      |  8 --------
 2 files changed, 9 insertions(+), 11 deletions(-)

diff --git a/vertexai/_genai/agent_engines.py b/vertexai/_genai/agent_engines.py
index c40bbb38d6..c9302b32dd 100644
--- a/vertexai/_genai/agent_engines.py
+++ b/vertexai/_genai/agent_engines.py
@@ -1944,7 +1944,7 @@ def append_session_event(
             DeprecationWarning,
             stacklevel=2,
         )
-        return self.sessions.events.append(  # type: ignore[no-any-return]
+        return self.sessions.events.append(
             name=name,
             author=author,
             invocation_id=invocation_id,
@@ -1967,7 +1967,7 @@ def list_session_events(
             DeprecationWarning,
             stacklevel=2,
         )
-        return self.sessions.events.list(name=name, config=config)  # type: ignore[no-any-return]
+        return self.sessions.events.list(name=name, config=config)
 
 
 class AsyncAgentEngines(_api_module.BaseModule):
@@ -2436,7 +2436,13 @@ async def append_session_event(
             DeprecationWarning,
             stacklevel=2,
         )
-        return await self.sessions.events.append(name=name, config=config)  # type: ignore[no-any-return]
+        return await self.sessions.events.append(
+            name=name,
+            author=author,
+            invocation_id=invocation_id,
+            timestamp=timestamp,
+            config=config,
+        )
 
     async def delete_memory(
         self,
diff --git a/vertexai/_genai/sessions.py b/vertexai/_genai/sessions.py
index 2e5cfdbb80..777bcf56a9 100644
--- a/vertexai/_genai/sessions.py
+++ b/vertexai/_genai/sessions.py
@@ -608,10 +608,6 @@ def _update(
     _events = None
 
     @property
-    @_common.experimental_warning(
-        "The Vertex SDK GenAI agent_engines.sessions.events module is "
-        "experimental, and may change in future versions."
-    )
     def events(self) -> "session_events_module.SessionEvents":
         if self._events is None:
             try:
@@ -1094,10 +1090,6 @@ async def _update(
     _events = None
 
     @property
-    @_common.experimental_warning(
-        "The Vertex SDK GenAI agent_engines.sessions.events module is "
-        "experimental, and may change in future versions."
-    )
     def events(self) -> "session_events_module.AsyncSessionEvents":
         if self._events is None:
             try: