assertThat(iterator.previous()).isEqualTo("b");
    assertThrows(UnsupportedOperationException.class, () -> iterator.set("c"));
  }

  UnmodifiableListIterator<String> create() {
    String[] array = {"a", "b", "c"};

    return new UnmodifiableListIterator<String>() {
      int i;

      @Override
      public boolean hasNext() {
        return i < array.length;
      }

      @Override

    assertThat(iterator.previous()).isEqualTo("b");
    assertThrows(UnsupportedOperationException.class, () -> iterator.set("c"));
  }

  UnmodifiableListIterator<String> create() {
    String[] array = {"a", "b", "c"};

    return new UnmodifiableListIterator<String>() {
      int i;

      @Override
      public boolean hasNext() {
        return i < array.length;
      }

      @Override

  @Override
  public UnmodifiableIterator<E> iterator() {
    return listIterator();
  }

  @Override
  public UnmodifiableListIterator<E> listIterator() {
    return listIterator(0);
  }

  @Override
  public UnmodifiableListIterator<E> listIterator(int index) {
    return new AbstractIndexedListIterator<E>(size(), index) {
      @Override
      protected E get(int index) {