private function getBuzzHeaders(BuzzResponse $response)
    {
        $buzzHeaders = $response->getHeaders();
        unset($buzzHeaders[0]);
        $headers = [];
        foreach ($buzzHeaders as $headerLine) {
            list($name, $value) = explode(':', $headerLine, 2);
            $headers[$name] = trim($value);
        }

        return $headers;
    }