@utilities.arguments_not_none<EOL><INDENT>def order_gradebook_column_results(self, gradebook_column_search_order):<DEDENT>
raise errors.Unimplemented()<EOL>
Specify an ordering to the search results.

        arg:    gradebook_column_search_order
                (osid.grading.GradebookColumnSearchOrder): gradebook
                column search order
        raise:  NullArgument - ``gradebook_column_search_order`` is
                ``null``
        raise:  Unsupported - ``gradebook_column_search_order`` is not
                of this service
        *compliance: mandatory -- This method must be implemented.*