public function output_html($data, $query='') {
        global $OUTPUT;

        $context = (object) [
            'id' => $this->get_id(),
            'name' => $this->get_full_name()
        ];
        $element = $OUTPUT->render_from_template('core_admin/setting_configempty', $context);

        return format_admin_setting($this, $this->visiblename, $element, $this->description, true, '', get_string('none'), $query);
    }