for (E e : elements) {
      listIterator.add(e);
      changed = true;
    }
    return changed;
  }

  /** An implementation of {@link List#indexOf(Object)}. */
  static int indexOfImpl(List<?> list, @Nullable Object element) {
    if (list instanceof RandomAccess) {
      return indexOfRandomAccess(list, element);
    } else {
      ListIterator<?> listIterator = list.listIterator();

    for (E e : elements) {
      listIterator.add(e);
      changed = true;
    }
    return changed;
  }

  /** An implementation of {@link List#indexOf(Object)}. */
  static int indexOfImpl(List<?> list, @Nullable Object element) {
    if (list instanceof RandomAccess) {
      return indexOfRandomAccess(list, element);
    } else {
      ListIterator<?> listIterator = list.listIterator();

   * this implementation.
   *
   * @since 7.0
   */
  protected int standardIndexOf(@Nullable Object element) {
    return Lists.indexOfImpl(this, element);
  }

  /**
   * A sensible default implementation of {@link #lastIndexOf}, in terms of {@link
   * #listIterator(int)}. If you override {@link #listIterator(int)}, you may wish to override

   * this implementation.
   *
   * @since 7.0
   */
  protected int standardIndexOf(@Nullable Object element) {
    return Lists.indexOfImpl(this, element);
  }

  /**
   * A sensible default implementation of {@link #lastIndexOf}, in terms of {@link
   * #listIterator(int)}. If you override {@link #listIterator(int)}, you may wish to override

    E[] castedArray = (E[]) array;
    return Arrays.asList(castedArray);
  }

  @Override
  public int indexOf(@Nullable Object object) {
    return (object == null) ? -1 : Lists.indexOfImpl(this, object);
  }

  @Override
  public int lastIndexOf(@Nullable Object object) {
    return (object == null) ? -1 : Lists.lastIndexOfImpl(this, object);
  }

  @Override

    @Override
    protected E get(int index) {
      return list.get(index);
    }
  }

  @Override
  public int indexOf(@Nullable Object object) {
    return (object == null) ? -1 : Lists.indexOfImpl(this, object);
  }

  @Override
  public int lastIndexOf(@Nullable Object object) {
    return (object == null) ? -1 : Lists.lastIndexOfImpl(this, object);
  }

  @Override

    int n = size();
    for (int i = 0; i < n; i++) {
      consumer.accept(get(i));
    }
  }

  @Override
  public int indexOf(@Nullable Object object) {
    return (object == null) ? -1 : Lists.indexOfImpl(this, object);
  }

  @Override
  public int lastIndexOf(@Nullable Object object) {
    return (object == null) ? -1 : Lists.lastIndexOfImpl(this, object);
  }

  @Override