return delegate().hashCode();
      }
    }

    private static final long serialVersionUID = 0;
  }

  static final class SynchronizedRandomAccessList<E extends @Nullable Object>
      extends SynchronizedList<E> implements RandomAccess {
    SynchronizedRandomAccessList(List<E> list, @CheckForNull Object mutex) {
      super(list, mutex);
    }

    private static final long serialVersionUID = 0;
  }