Public Invocation Context for Global Instructions Plugin

src/google/adk/agents/callback_context.py

@@ -53,6 +53,21 @@ def __init__(
         delta=self._event_actions.state_delta,
     )
 
+  @property
+  def invocation_context(self) -> InvocationContext:
+    """The invocation context for this callback.
+
+    This property provides access to the invocation context for Agent Development
+    Kit plugins that need to interact with the underlying context. This is
+    intended for ADK plugin development and not for general user consumption.
+
+    Note: This property attempts to solve the TO DO (weisun) by making the invocation context public for ADK plugin development.
+
+    Returns:
+      The InvocationContext instance for this callback. 
+    """
+    return self._invocation_context
+
   @property
   @override
   def state(self) -> State: