@remove_null_proxy_kwarg<EOL><INDENT>def get_repository_notification_session(self, repository_receiver=None):<DEDENT>
pass<EOL>
Gets the notification session for subscribing to changes to a repository.

        arg:    repository_receiver
                (osid.repository.RepositoryReceiver): the notification
                callback
        return: (osid.repository.RepositoryNotificationSession) - a
                ``RepositoryNotificationSession``
        raise:  NullArgument - ``repository_receiver`` is ``null``
        raise:  OperationFailed - unable to complete request
        raise:  Unimplemented - ``supports_repository_notification()``
                is ``false``
        *compliance: optional -- This method must be implemented if
        ``supports_repository_notification()`` is ``true``.*