request(...)` resolves. * * An interceptor might also short-circuit and not delegate to the `$httpClient` at all. * * Any retry or cloned follow-up request must be manually cloned from `$request` to ensure a properly working * interceptor chain, e.g. the {@see DecompressResponse} interceptor only decodes a response if the * `accept-encoding` header isn't set manually. If the request isn't cloned, the first attempt will set the header * and the second attempt will see the header and won't decode the response, because it thinks another interceptor * or the application itself will care about the decoding. * * @param Request $request * @param CancellationToken $cancellation * @param DelegateHttpClient $httpClient * * @return Promise */ public function request( Request $request, CancellationToken $cancellation, DelegateHttpClient $httpClient ): Promise; }