}
        i++;
      }
    }
    clearSeenExceptions();
    handleAllCompleted();
    /*
     * Null out fields, including some used in handleAllCompleted() above (like
     * `CollectionFuture.values`). This might be a no-op: If this future completed during
     * handleAllCompleted(), they will already have been nulled out. But in the case of

    @RetainedLocalRef List<@Nullable Present<V>> localValues = values;
    if (localValues != null) {
      localValues.set(index, new Present<>(returnValue));
    }
  }

  @Override
  final void handleAllCompleted() {
    @RetainedLocalRef List<@Nullable Present<V>> localValues = values;
    if (localValues != null) {
      set(combine(localValues));
    }
  }

  @Override

    this.task = new CallableInterruptibleTask(callable, listenerExecutor);
    init();
  }

  @Override
  void collectOneValue(int index, @Nullable Object returnValue) {}

  @Override
  void handleAllCompleted() {
    @RetainedLocalRef CombinedFutureInterruptibleTask<?> localTask = task;
    if (localTask != null) {
      localTask.execute();
    }
  }

  @Override