@abc.abstractmethod<EOL><INDENT>def order_items(self, item_ids, assessment_part_id):<DEDENT>
pass<EOL>
Reorders a set of items in an assessment part.

        :param item_ids: ``Ids`` for a set of ``Items``
        :type item_ids: ``osid.id.Id[]``
        :param assessment_part_id: ``Id`` of the ``AssessmentPartId``
        :type assessment_part_id: ``osid.id.Id``
        :raise: ``NotFound`` -- ``assessment_part_id`` not found or, an ``item_id`` not related to ``assessment_part_id``
        :raise: ``NullArgument`` -- ``item_ids`` or ``agenda_id`` is ``null``
        :raise: ``OperationFailed`` -- unable to complete request
        :raise: ``PermissionDenied`` -- authorization failure

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