public function no_questions_message($canedit, $editurl) {
        $output = '';
        $output .= $this->notification(get_string('noquestions', 'quiz'));
        if ($canedit) {
            $output .= $this->single_button($editurl, get_string('editquiz', 'quiz'), 'get');
        }

        return $output;
    }