@abc.abstractmethod<EOL><INDENT>def order_family_results(self, family_search_order):<DEDENT>
pass<EOL>
Specify an ordering to the search results.

        :param family_search_order: family search order
        :type family_search_order: ``osid.relationship.FamilySearchOrder``
        :raise: ``NullArgument`` -- ``family_search_order`` is ``null``
        :raise: ``Unsupported`` -- ``family_search_order`` is not of this service

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