chore: Remove experimental label from Session Events.

PiperOrigin-RevId: 874184845

Author: vertex-sdk-bot

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,
@@ -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,

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:
@@ -624,7 +620,7 @@ def events(self) -> "session_events_module.SessionEvents":
                     "additional packages. Please install them using pip install "
                     "google-cloud-aiplatform[agent_engines]"
                 ) from e
-        return self._events.SessionEvents(self._api_client)  # type: ignore[no-any-return]
+        return self._events.SessionEvents(self._api_client)
 
     def create(
         self,
@@ -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:
@@ -1110,7 +1102,7 @@ def events(self) -> "session_events_module.AsyncSessionEvents":
                     "additional packages. Please install them using pip install "
                     "google-cloud-aiplatform[agent_engines]"
                 ) from e
-        return self._events.AsyncSessionEvents(self._api_client)  # type: ignore[no-any-return]
+        return self._events.AsyncSessionEvents(self._api_client)
 
     async def create(
         self,