Symfony\Bundle\FrameworkBundle\ContainerAwareEventDispatcher::dispatch PHP Метод

    public function dispatch($eventName, Event $event = null)
    {
        if (isset($this->listenerIds[$eventName])) {
            foreach ($this->listenerIds[$eventName] as $args) {
                list($serviceId, $method, $priority) = $args;
                $listener = $this->container->get($serviceId);

                $key = $serviceId.$method;
                if (!isset($this->listeners[$eventName][$key])) {
                    $this->addListener($eventName, array($listener, $method), $priority);
                } elseif ($listener !== $this->listeners[$eventName][$key]) {
                    $this->removeListener($eventName, array($this->listeners[$eventName][$key], $method));
                    $this->addListener($eventName, array($listener, $method), $priority);
                }

                $this->listeners[$eventName][$key] = $listener;
            }
        }

        parent::dispatch($eventName, $event);
    }

 public function testReEnteringAScope()
 {
     $event = new Event();
     $service1 = $this->getMock('Symfony\\Bundle\\FrameworkBundle\\Tests\\Service');
     $service1->expects($this->exactly(2))->method('onEvent')->with($event);
     $scope = new Scope('scope');
     $container = new Container();
     $container->addScope($scope);
     $container->enterScope('scope');
     $container->set('service.listener', $service1, 'scope');
     $dispatcher = new ContainerAwareEventDispatcher($container);
     $dispatcher->addListenerService('onEvent', array('service.listener', 'onEvent'));
     $dispatcher->dispatch('onEvent', $event);
     $service2 = $this->getMock('Symfony\\Bundle\\FrameworkBundle\\Tests\\Service');
     $service2->expects($this->once())->method('onEvent')->with($event);
     $container->enterScope('scope');
     $container->set('service.listener', $service2, 'scope');
     $dispatcher->dispatch('onEvent', $event);
     $container->leaveScope('scope');
     $dispatcher->dispatch('onEvent');
 }