file; } public function setFile(ResourceInterface $file): void { $this->file = $file; } public function getRequest(): ServerRequestInterface { return $this->request; } public function setResponse(ResponseInterface $response): void { $this->response = $response; } public function getResponse(): ?ResponseInterface { return $this->response; } public function isPropagationStopped(): bool { return $this->response !== null; } }