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

        if ((string)$data === $this->yes) {
            $notifications = tool_mobile\api::get_potential_config_issues(); // Safe to call, plugin available if we reach here.
            foreach ($notifications as $notification) {
                $message = get_string($notification[0], $notification[1]);
                $html .= $OUTPUT->notification($message, \core\output\notification::NOTIFY_WARNING);
            }
        }

        return $html;
    }