pred = curr;
        } else if (pred != null) { // We are unlinking this node and it has a predecessor.
          pred.next = succ;
          if (pred.thread == null) { // We raced with another node that unlinked pred. Restart.
            continue restart;
          }
        } else if (!ATOMIC_HELPER.casWaiters(this, curr, succ)) { // We are unlinking head
          continue restart; // We raced with an add or complete

    return state.isCancelled();
  }

  @Override
  public boolean isDone() {
    return state.isDone();
  }

  /*
   * ForwardingFluentFuture needs to override those methods, so they are not final.
   */
  @CanIgnoreReturnValue
  @Override
  public V get() throws InterruptedException, ExecutionException {
    state.maybeThrowOnGet(throwable);
    return value;
  }