ListenableFuture<String> a, ListenableFuture<String> b) {
            return successfulAsList(ImmutableSet.of(a, b));
          }
        };
  }

  /**
   * Very rough equivalent of a timed get, produced by calling the no-arg get method in another
   * thread and waiting a short time for it.
   *
   * <p>We need this to test the behavior of no-arg get methods without hanging the main test thread

              ListenableFuture<String> a, ListenableFuture<String> b) {
            return successfulAsList(ImmutableSet.of(a, b));
          }
        };
  }

  /**
   * Very rough equivalent of a timed get, produced by calling the no-arg get method in another
   * thread and waiting a short time for it.
   *
   * <p>We need this to test the behavior of no-arg get methods without hanging the main test thread

		cst := newClientServerTest(t, mode, HandlerFunc(func(res ResponseWriter, req *Request) {
			_, err := io.Copy(io.Discard, req.Body)
			if !errors.Is(err, os.ErrDeadlineExceeded) {
				t.Errorf("server timed out reading request body: got err %v; want os.ErrDeadlineExceeded", err)
			}
			res.Write([]byte(respBody))
		}), func(ts *httptest.Server) {
			ts.Config.ReadHeaderTimeout = -1 // don't time out while reading headers

	return &timeoutHandler{
		handler: h,
		body:    msg,
		dt:      dt,
	}
}

// ErrHandlerTimeout is returned on [ResponseWriter] Write calls
// in handlers which have timed out.
var ErrHandlerTimeout = errors.New("http: Handler timeout")

type timeoutHandler struct {
	handler Handler
	body    string
	dt      time.Duration