* Unused stub class, unreferenced under Java and manually emulated under GWT.
 *
 * @author Chris Povirk
 */
@GwtCompatible(emulated = true)
@ElementTypesAreNonnullByDefault
abstract class ForwardingImmutableList<E> {
  private ForwardingImmutableList() {}

 * Unused stub class, unreferenced under Java and manually emulated under GWT.
 *
 * @author Chris Povirk
 */
@GwtCompatible(emulated = true)
@ElementTypesAreNonnullByDefault
abstract class ForwardingImmutableList<E> {
  private ForwardingImmutableList() {}

/**
 * GWT emulated version of {@link ImmutableList}. TODO(cpovirk): more doc
 *
 * @author Hayward Chan
 */
@ElementTypesAreNonnullByDefault
abstract class ForwardingImmutableList<E> extends ImmutableList<E> {

  ForwardingImmutableList() {}

  abstract List<E> delegateList();

  public int indexOf(@Nullable Object object) {
    return delegateList().indexOf(object);
  }