/**
  * @param string $widget_class
  * @param string $widget_class_name
  */
 public function register($widget_class, $widget_class_name = '')
 {
     if (is_object($widget_class)) {
         $this->widgets[$widget_class_name] = $widget_class;
     } else {
         parent::register($widget_class);
     }
 }