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

        :param superseding_event_search_order: superseding event search order
        :type superseding_event_search_order: ``osid.calendaring.SupersedingEventSearchOrder``
        :raise: ``NullArgument`` -- ``superseding_event_search_order`` is ``null``
        :raise: ``Unsupported`` -- ``supereding_event_search_order`` is not of this service

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