def get_agent_search_session(self):
raise Unimplemented()<EOL>
Gets the ``OsidSession`` associated with the agent search service.

        return: (osid.authentication.AgentSearchSession) - an
                ``AgentSearchSession``
        raise:  OperationFailed - unable to complete request
        raise:  Unimplemented - ``supports_agent_search()`` is ``false``
        *compliance: optional -- This method must be implemented if
        ``supports_agent_search()`` is ``true``.*