eZ\Bundle\EzPublishCoreBundle\HttpCache::invalidate PHP Метод

    protected function invalidate(Request $request, $catch = false)
    {
        if ($request->getMethod() !== 'PURGE' && $request->getMethod() !== 'BAN') {
            return parent::invalidate($request, $catch);
        }
        // Reject all non-authorized clients
        if (!$this->isInternalRequestAllowed($request)) {
            return new Response('', 405);
        }
        $response = new Response();
        $store = $this->getStore();
        if ($store instanceof RequestAwarePurger) {
            $result = $store->purgeByRequest($request);
        } else {
            $result = $store->purge($request->getUri());
        }
        if ($result === true) {
            $response->setStatusCode(200, 'Purged');
        } else {
            $response->setStatusCode(404, 'Not purged');
        }
        return $response;
    }