@abc.abstractmethod<EOL><INDENT>def get_cognitive_process_search_order(self):<DEDENT>
return<EOL>
Gets a grade search order to order on cognitive process.

        :return: a grade search order
        :rtype: ``osid.grading.GradeSearchOrder``
        :raise: ``Unimplemented`` -- ``supports_cognitive_process_search_order()`` is ``false``

        *compliance: optional -- This method must be implemented if
        ``supports_cognitive_process_search_order()`` is ``true``.*