src/Broker.php
public function handle(ServerRequestInterface $request): ResponseInterface
    {
        $broker = clone $this;

        return $broker->nextMiddleware()->process($request, $broker);
    }
public function handle(ServerRequestInterface $request): ResponseInterface
    {
        $broker = clone $this;

        return $broker->nextMiddleware()->process($request, $broker);
    }
RequestHandlerInterface