Blackfire\Player\Guzzle\StepMiddleware::createCrawler PHP Метод

    private function createCrawler($uri, ResponseInterface $response)
    {
        $crawler = null;
        if ($response->hasHeader('Content-Type') && (false !== strpos($response->getHeaderLine('Content-Type'), 'html') || false !== strpos($response->getHeaderLine('Content-Type'), 'xml'))) {
            $crawler = new Crawler(null, $uri);
            $crawler->addContent((string) $response->getBody(), $response->getHeaderLine('Content-Type'));
        }
        return $crawler;
    }