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

        :param grade_entry_search_order: package search order
        :type grade_entry_search_order: ``osid.grading.GradeEntrySearchOrder``
        :raise: ``NullArgument`` -- ``grade_entry_search_order`` is ``null``
        :raise: ``Unsupported`` -- ``grade_entry_search_order`` is not of this service

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