def on_invalidation(self, session_key, session=None, ise=None):
if session:<EOL><INDENT>super().on_invalidation(session, ise, session_key)<EOL><DEDENT>web_registry = session_key.web_registry<EOL>del web_registry.session_id<EOL>
:type session_key:  session_abcs.SessionKey
:type session: session_abcs.Session
:type ese: InvalidSessionException