return this;
  }

  @Override
  @GwtIncompatible // Spliterator
  public Spliterator<E> spliterator() {
    return spliteratorWithCharacteristics(SPLITERATOR_CHARACTERISTICS);
  }

  @GwtIncompatible // Spliterator
  Spliterator<E> spliteratorWithCharacteristics(int characteristics) {
    return CollectSpliterators.indexed(size(), characteristics, this::get);
  }

  @Override