Tebru\Retrofit\Http\Callback::onResponse PHP Method

    public function onResponse(ResponseInterface $response);

 /**
  * Send asynchronous guzzle request
  *
  * @param RequestInterface $request
  * @param \Tebru\Retrofit\Http\Callback $callback
  * @return null
  */
 public function sendAsync(RequestInterface $request, Callback $callback)
 {
     $this->promises[] = $this->client->sendAsync($request)->then(function (ResponseInterface $response) use($callback, $request) {
         if (null !== $this->eventDispatcher) {
             $this->eventDispatcher->dispatch(AfterSendEvent::NAME, new AfterSendEvent($request, $response));
         }
         $callback->onResponse($response);
     }, function (Exception $exception) use($callback, $request) {
         $response = null;
         $context = [];
         if ($exception instanceof \GuzzleHttp\Exception\RequestException) {
             $request = $exception->getRequest();
             $response = $exception->getResponse();
             $context = $exception->getHandlerContext();
         }
         $requestException = new RequestException($exception->getMessage(), $exception->getCode(), $exception->getPrevious(), $request, $response, $context);
         if (null !== $this->eventDispatcher) {
             $this->eventDispatcher->dispatch(ApiExceptionEvent::NAME, new ApiExceptionEvent($requestException, $request));
         }
         $callback->onFailure($requestException);
     });
 }