src/Processor.php
public function handle(ServerRequestInterface $request): ResponseInterface
	{
		if ($this->stages->valid()) {
			$stage = $this->stages->current();
			$this->stages->next();

			return $stage->process($request, $this);
		}

		return $this->responseFactory->createResponse(404);
	}
public function handle(ServerRequestInterface $request): ResponseInterface
	{
		if ($this->stages->valid()) {
			$stage = $this->stages->current();
			$this->stages->next();

			return $stage->process($request, $this);
		}

		return $this->responseFactory->createResponse(404);
	}
Handle the request

@param ServerRequestInterface $request
@return ResponseInterface