* overhead of constructing a {@link Function} for internal methods.
 *
 * @author Louis Wasserman
 */
@GwtCompatible
abstract class TransformedListIterator<F extends @Nullable Object, T extends @Nullable Object>
    extends TransformedIterator<F, T> implements ListIterator<T> {
  TransformedListIterator(ListIterator<? extends F> backingIterator) {
    super(backingIterator);
  }

  private ListIterator<? extends F> backingIterator() {

 * overhead of constructing a {@link Function} for internal methods.
 *
 * @author Louis Wasserman
 */
@GwtCompatible
abstract class TransformedListIterator<F extends @Nullable Object, T extends @Nullable Object>
    extends TransformedIterator<F, T> implements ListIterator<T> {
  TransformedListIterator(ListIterator<? extends F> backingIterator) {
    super(backingIterator);
  }

  private ListIterator<? extends F> backingIterator() {