* ListeningScheduledExecutorService}, it is returned untouched, and the rest of this
   * documentation does not apply.
   *
   * @since 10.0
   */
  @J2ktIncompatible
  @GwtIncompatible // TODO
  public static ListeningScheduledExecutorService listeningDecorator(
      ScheduledExecutorService delegate) {
    return (delegate instanceof ListeningScheduledExecutorService)
        ? (ListeningScheduledExecutorService) delegate

          }
        };
    ListeningScheduledExecutorService service = listeningDecorator(delegate);
    ListenableFuture<Integer> future =
        service.schedule(Callables.returning(42), 1, TimeUnit.MILLISECONDS);

    /*
     * Wait not just until the Future's value is set (as in future.get()) but
     * also until ListeningScheduledExecutorService's wrapper task is done

          }
        };
    ListeningScheduledExecutorService service = listeningDecorator(delegate);
    ListenableFuture<Integer> future =
        service.schedule(Callables.returning(42), 1, TimeUnit.MILLISECONDS);

    /*
     * Wait not just until the Future's value is set (as in future.get()) but
     * also until ListeningScheduledExecutorService's wrapper task is done