SwingItemViewerCompound implements ItemViewerCompound<T, Container> { @Override public TopItemUpdater<T, Container> getTopItemUpdater() { return topItemUpdater; } SwingItemViewerCompound( Timeline<T> timeline, ItemUiFactory<T, Container> itemUiFactory ); @Override TopItemUpdater<T, Container> getTopItemUpdater(); @Override TopItemScroller<T> getScroller(); @Override ItemUiList<T, Container> getItemUiList();  }
@Test public void getTopItemUpdater() { assertThat( compound.getTopItemUpdater() ).isNotNull(); }