Weak hands cannot be planted, meager skills have no foundation. Shallow wisdom is futile, how can one hope for a good name?扰扰从役倦，屑屑身事微。少壮轻年月，迟暮惜光辉。
request = $request;
$this->response = $response;
$this->transferTime = $transferTime;
$this->handlerErrorData = $handlerErrorData;
$this->handlerStats = $handlerStats;
}
public function getRequest(): RequestInterface
{
return $this->request;
}
/**
* Returns the response that was received (if any).
*/
public function getResponse(): ?ResponseInterface
{
return $this->response;
}
/**
* Returns true if a response was received.
*/
public function hasResponse(): bool
{
return $this->response !== null;
}
/**
* Gets handler specific error data.
*
* This might be an exception, a integer representing an error code, or
* anything else. Relying on this value assumes that you know what handler
* you are using.
*
* @return mixed
*/
public function getHandlerErrorData()
{
return $this->handlerErrorData;
}
/**
* Get the effective URI the request was sent to.
*/
public function getEffectiveUri(): UriInterface
{
return $this->request->getUri();
}
/**
* Get the estimated time the request was being transferred by the handler.
*
* @return float|null Time in se