CMB2::__get PHP Метод

    public function __get($field)
    {
        switch ($field) {
            case 'cmb_id':
            case 'meta_box':
            case 'updated':
            case 'has_columns':
                return $this->{$field};
            case 'object_id':
                return $this->object_id();
            default:
                throw new Exception('Invalid ' . __CLASS__ . ' property: ' . $field);
        }
    }