Symfony\Component\HttpKernel\Event\FilterResponseEvent::setResponse PHP Method

    public function setResponse(Response $response)
    {
        $this->response = $response;
    }

 public function onResponse(FilterResponseEvent $event)
 {
     if (HttpKernelInterface::MASTER_REQUEST !== $event->getRequestType()) {
         return;
     }
     $response = $event->getResponse();
     $request = $event->getRequest();
     if (!$this->container->hasParameter('newscoop.gimme.allow_origin')) {
         return false;
     }
     $alowedHosts = $this->container->getParameter('newscoop.gimme.allow_origin');
     if (count($alowedHosts) == 0) {
         return false;
     }
     if (in_array('*', $alowedHosts)) {
         $response->headers->set('Access-Control-Allow-Origin', '*');
         $event->setResponse($response);
     } else {
         foreach ($alowedHosts as $host) {
             if ($request->server->get('HTTP_ORIGIN') == $host) {
                 $response->headers->set('Access-Control-Allow-Origin', $host);
                 $event->setResponse($response);
             }
         }
     }
 }