<?phpnamespaceHttp\Client;useHttp\Promise\Promise;usePsr\Http\Message\RequestInterface;/** * Sends a PSR-7 Request in an asynchronous way by returning a Promise. * * @author Joel Wurtz <joel.wurtz@gmail.com> */interfaceHttpAsyncClient{/** * Sends a PSR-7 request in an asynchronous way. * * Exceptions related to processing the request are available from the returned Promise. * * @param RequestInterface $request * * @return Promise Resolves a PSR-7 Response or fails with an Http\Client\Exception. * * @throws \Exception If processing the request is impossible (eg. bad configuration). */publicfunctionsendAsyncRequest(RequestInterface$request);}