public function editsection_form($action, $customdata = array()) {
        global $CFG;
        require_once($CFG->dirroot. '/course/editsection_form.php');
        $context = context_course::instance($this->courseid);
        if (!array_key_exists('course', $customdata)) {
            $customdata['course'] = $this->get_course();
        }
        return new editsection_form($action, $customdata);
    }