Symfony 2.8：如何访问onKernelResponse EventListener中发送到视图的$ data？

Question

我为onKernelResponse创建了一个EventListener：

    <?php

namespace Webprogest\More\SharedBundle\EventListener;

use Symfony\Component\HttpKernel\Event\GetResponseEvent;
use Symfony\Component\HttpKernel\HttpKernel;
use Symfony\Component\HttpKernel\HttpKernelInterface;
use Symfony\Component\Security\Core\SecurityContextInterface;
use Symfony\Component\HttpFoundation\Session\Session;
use Symfony\Component\DependencyInjection\ContainerInterface;
use Symfony\Component\HttpKernel\Event\FilterResponseEvent;

class RequestListener
{

    protected $sc;
    private $container;

    public function __construct(ContainerInterface $container)
    {
        $this->container = $container;
    }

    public function onKernelResponse(FilterResponseEvent $event)
    {
        $response = $event->getResponse();
        var_dump($response);
    }
}

这是我的service.yml：

kernel.listener.your_listener_name:
        class: Webprogest\More\SharedBundle\EventListener\RequestListener
        arguments: ["@service_container"]
        tags:
            - { name: kernel.event_listener, event: kernel.request, method: onKernelRequest }
            - { name: kernel.event_listener, event: kernel.response, method: onKernelResponse }

我的问题是：当然，在调用Controller之前，在调用视图之前触发此事件的次数的99％。那么：我如何访问我发送到控制器视图的$ data数组？ 感谢