lib/Browser.php
public function sendRequest(RequestInterface $request, array $options = []): ResponseInterface
    {
        $chain = $this->createMiddlewareChain($this->middleware, function (RequestInterface $request, callable $responseChain) use ($options) {
            $response = $this->client->sendRequest($request, $options);
            $responseChain($request, $response);
        }, function (RequestInterface $request, ResponseInterface $response) {
            $this->lastRequest = $request;
            $this->lastResponse = $response;
        });

        // Call the chain
        $chain($request);

        return $this->lastResponse;
    }
public function sendRequest(RequestInterface $request, array $options = []): ResponseInterface
    {
        $chain = $this->createMiddlewareChain($this->middleware, function (RequestInterface $request, callable $responseChain) use ($options) {
            $response = $this->client->sendRequest($request, $options);
            $responseChain($request, $response);
        }, function (RequestInterface $request, ResponseInterface $response) {
            $this->lastRequest = $request;
            $this->lastResponse = $response;
        });

        // Call the chain
        $chain($request);

        return $this->lastResponse;
    }
Send a PSR7 request.

@throws ClientException
@throws LogicException
@throws InvalidArgumentException