public function render_display_index_heading($linktext, $listquestionurl) {
        $output = '';

        $output .= $this->heading(get_string('questionsthatneedgrading', 'quiz_grading'), 3);
        $output .= html_writer::tag('p', html_writer::link($listquestionurl, $linktext), ['class' => 'toggleincludeauto']);

        return $output;
    }