/**
  * Implementation Zend_EventManager_ListenerAggregate
  * 
  * @param \Zend_EventManager_EventCollection $events
  */
 public function detach(\Zend_EventManager_EventCollection $events)
 {
     foreach ($this->listeners as $index => $listener) {
         if ($events->detach($listener)) {
             unset($this->listeners[$index]);
         }
     }
 }