return "task=[" + localTask + "]";
    }
    return super.pendingToString();
  }

  @WeakOuter
  private final class TrustedFutureInterruptibleTask extends InterruptibleTask<V> {
    private final Callable<V> callable;

    TrustedFutureInterruptibleTask(Callable<V> callable) {
      this.callable = checkNotNull(callable);
    }

    @Override
    final boolean isDone() {