return new ImmediateScheduledFuture<>(immediateFailedFuture(t));
    }

    ImmediateScheduledFuture(ListenableFuture<V> delegate) {
      super(delegate);
    }

    @Override
    public long getDelay(TimeUnit unit) {
      return 0;
    }

    @Override
    public int compareTo(Delayed other) {
      return 0;
    }
  }

      implements ScheduledFuture<V> {
    @Override
    protected Future<V> delegate() {
      throw new UnsupportedOperationException("test should not care about this");
    }

    @Override
    public long getDelay(TimeUnit unit) {
      throw new UnsupportedOperationException("test should not care about this");
    }

    @Override
    public int compareTo(Delayed other) {

      implements ScheduledFuture<V> {
    @Override
    protected Future<V> delegate() {
      throw new UnsupportedOperationException("test should not care about this");
    }

    @Override
    public long getDelay(TimeUnit unit) {
      throw new UnsupportedOperationException("test should not care about this");
    }

    @Override
    public int compareTo(Delayed other) {

    // TODO(diamondm) consider moving this into addPendingString so it's always in the output
    if (this instanceof ScheduledFuture) {
      return "remaining delay=[" + ((ScheduledFuture) this).getDelay(MILLISECONDS) + " ms]";
    }
    return null;
  }

  @SuppressWarnings("CatchingUnchecked") // sneaky checked exception
  private void addPendingString(StringBuilder builder) {