@LazyInit private transient @Nullable Collection<V> values;

  @Override
  public Collection<V> values() {
    Collection<V> result = values;
    return (result == null) ? values = createValues() : result;
  }

  Collection<V> createValues() {
    return new Values();
  }

  Iterator<V> valuesIterator() {
    return new TransformedIterator<Cell<R, C, V>, V>(cellSet().iterator()) {
      @Override

   */
  @Override
  public ImmutableCollection<V> values() {
    return (ImmutableCollection<V>) super.values();
  }

  @Override
  ImmutableCollection<V> createValues() {
    return new Values<>(this);
  }

  @Override
  UnmodifiableIterator<V> valueIterator() {
    return new UnmodifiableIterator<V>() {

   */
  @Override
  public ImmutableCollection<V> values() {
    return (ImmutableCollection<V>) super.values();
  }

  @Override
  ImmutableCollection<V> createValues() {
    return new Values<>(this);
  }

  @Override
  UnmodifiableIterator<V> valueIterator() {
    return new UnmodifiableIterator<V>() {

    @Override
    public Collection<V> values() {
      Collection<V> result = values;
      return (result == null) ? values = createValues() : result;
    }

    Collection<V> createValues() {
      return new Values<>(this);
    }
  }

  abstract static class IteratorBasedAbstractMap<
          K extends @Nullable Object, V extends @Nullable Object>

   * by the values of a second key, and so on.
   */
  @Override
  public Collection<V> values() {
    return super.values();
  }

  @Override
  Collection<V> createValues() {
    return new Values();
  }

  @Override
  Iterator<V> valueIterator() {
    return new Itr<V>() {
      @Override
      @ParametricNullness