public function handle(GetResponseEvent $event)
    {
        if (!$this->registered && null !== $this->dispatcher && $event->isMasterRequest()) {
            $this->dispatcher->addListener(KernelEvents::RESPONSE, array($this, 'onKernelResponse'));
            $this->registered = true;
        }

        $request = $event->getRequest();
        $session = $request->getSession();
        /*$sessionId = $session->getId();
        if(empty($sessionId))
        {
            $session = null;
        }*/

        if (null === $session || null === $token = $session->get('_security_'.$this->contextKey)) {
            $this->context->setToken(null);

            return;
        }

        $token = unserialize($token);

        if (null !== $this->logger) {
            $this->logger->debug('Read SecurityContext from the session');
        }

        if ($token instanceof TokenInterface) {
            $token = $this->refreshUser($token);
        } elseif (null !== $token) {
            if (null !== $this->logger) {
                $this->logger->warning(sprintf('Session includes a "%s" where a security token is expected', is_object($token) ? get_class($token) : gettype($token)));
            }

            $token = null;
        }

        $this->context->setToken($token);
    }