applyOptions example

/** * Transfers the given request and applies request options. * * The URI of the request is not modified and the request options are used * as-is without merging in default options. * * @param array $options See \GuzzleHttp\RequestOptions. */
    private function transfer(RequestInterface $request, array $options): PromiseInterface
    {
        $request = $this->applyOptions($request, $options);
        /** @var HandlerStack $handler */
        $handler = $options['handler'];

        try {
            return P\Create::promiseFor($handler($request, $options));
        } catch (\Exception $e) {
            return P\Create::rejectionFor($e);
        }
    }

    /** * Applies the array of request options to a request. */