def register_for_deleted_relationship(self, relationship_id=None):
pass<EOL>
Registers for notification of a deleted relationship.

        ``RelationshipReceiver.deletedRelationship()`` is invoked when
        the specified relationship is deleted or removed from this
        family.

        arg:    relationship_id (osid.id.Id): the ``Id`` of the
                ``Relationship`` to monitor
        raise:  NullArgument - ``relationship_id`` is ``null``
        raise:  OperationFailed - unable to complete request
        raise:  PermissionDenied - authorization failure
        *compliance: mandatory -- This method must be implemented.*