@abc.abstractmethod<EOL><INDENT>def can_register_for_resource_relationship_notifications(self):<DEDENT>
return<EOL>
Tests if this user can register for ``ResourceRelationship`` notifications.

        A return of true does not guarantee successful authorization. A
        return of false indicates that it is known all methods in this
        session will result in a ``PermissionDenied``. This is intended
        as a hint to an application that may opt not to offer
        notification operations.

        :return: ``false`` if notification methods are not authorized, ``true`` otherwise
        :rtype: ``boolean``


        *compliance: mandatory -- This method must be implemented.*