@abc.abstractmethod<EOL><INDENT>def apply_relationship_sequencing(self, relationship_search_order):<DEDENT>
pass<EOL>
Applies a relationship search order to this family.

        :param relationship_search_order: the relationship search order
        :type relationship_search_order: ``osid.relationship.RelationshipSearchOrder``
        :raise: ``NullArgument`` -- ``relationship_search_order`` is ``null``
        :raise: ``OperationFailed`` -- unable to complete request
        :raise: ``PermissionDenied`` -- authorization failure occurred
        :raise: ``Unsupported`` -- ``relationship_search_order`` not of this service

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