Shortcode_Button::__get PHP Метод

    public function __get($property)
    {
        switch ($property) {
            case 'button_data':
            case 'args':
            case 'handle':
            case 'button_slug':
                return $this->{$property};
            default:
                throw new Exception('Invalid ' . __CLASS__ . ' property: ' . $property);
        }
    }