private static function getHttpResponder(HttpRequest $request)
    {
        $responder = null;

        $responderClassName = $request->getResponderClassName();
        if (class_exists($responderClassName)) {
            $responder = new $responderClassName($request);
            Logger::get()->debug(
                "Responder '$responderClassName' is ready."
            );
        } else {
            throw new \Eix\Services\Net\Http\NotFoundException(
                "'$responderClassName' responder not found."
            );
        }

        return $responder;
    }