refactor: Rename CallInterceptor to ClientCallInterceptor and simplify default list assignments in the Client constructor.

Author: guglielmo-san

src/a2a/client/__init__.py

@@ -36,9 +36,9 @@
     'AgentCardResolutionError',
     'AuthInterceptor',
     'BaseClient',
-    'CallInterceptor',
     'Client',
     'ClientCallContext',
+    'ClientCallInterceptor',
     'ClientConfig',
     'ClientEvent',
     'ClientFactory',

src/a2a/client/client.py

@@ -115,12 +115,8 @@ def __init__(
             consumers: A list of callables to process events from the agent.
             interceptors: A list of interceptors to process requests and responses.
         """
-        if interceptors is None:
-            interceptors = []
-        if consumers is None:
-            consumers = []
-        self._consumers = consumers
-        self._interceptors = interceptors
+        self._consumers = consumers or []
+        self._interceptors = interceptors or []
 
     async def __aenter__(self) -> Self:
         """Enters the async context manager."""