protected function view_savegrading_result($message) {
        $o = '';
        $o .= $this->get_renderer()->render(new assign_header($this->get_instance(),
                                                      $this->get_context(),
                                                      $this->show_intro(),
                                                      $this->get_course_module()->id,
                                                      get_string('savegradingresult', 'assign')));
        $gradingresult = new assign_gradingmessage(get_string('savegradingresult', 'assign'),
                                                   $message,
                                                   $this->get_course_module()->id);
        $o .= $this->get_renderer()->render($gradingresult);
        $o .= $this->view_footer();
        return $o;
    }