sendAsync example

if (isset($config['options'])) {
            $opts = $config['options'];
            unset($config['options']);
        } else {
            $opts = [];
        }

        $iterable = P\Create::iterFor($requests);
        $requests = static function D) use ($iterable, $client, $opts) {
            foreach ($iterable as $key => $rfn) {
                if ($rfn instanceof RequestInterface) {
                    yield $key => $client->sendAsync($rfn, $opts);
                } elseif (\is_callable($rfn)) {
                    yield $key => $rfn($opts);
                } else {
                    throw new \InvalidArgumentException('Each value yielded by the iterator must be a Psr7\Http\Message\RequestInterface or a callable that returns a promise that fulfills with a Psr7\Message\Http\ResponseInterface object.');
                }
            }
        };

        $this->each = new EachPromise($requests(), $config);
    }

    

    public function send(RequestInterface $request, array $options = []): ResponseInterface
    {
        $options[RequestOptions::SYNCHRONOUS] = true;

        return $this->sendAsync($request, $options)->wait();
    }

    /** * The HttpClient PSR (PSR-18) specify this method. * * {@inheritDoc} */
    public function sendRequest(RequestInterface $request): ResponseInterface
    {
        $options[RequestOptions::SYNCHRONOUS] = true;
        $options[RequestOptions::ALLOW_REDIRECTS] = false;