}

    @Override
    public int size() {
      return backingList.size();
    }
  }

  private static class RandomAccessListWrapper<E extends @Nullable Object>
      extends AbstractListWrapper<E> implements RandomAccess {
    RandomAccessListWrapper(List<E> backingList) {
      super(backingList);
    }
  }

    }

    @Override
    public int size() {
      return backingList.size();
    }
  }

  private static class RandomAccessListWrapper<E extends @Nullable Object>
      extends AbstractListWrapper<E> implements RandomAccess {
    RandomAccessListWrapper(List<E> backingList) {
      super(backingList);
    }
  }