### Question:
TreeList { public void clear() { view.clear(); } @Inject  TreeList(final View view); void populate(final List<TreeListItem> items); void refresh(); List<TreeListItem> getCurrentItems(); void clear(); Node getElement(); void clearSelection(); List<TreeListItem> getSelectedItems(); void setOnSelectionChanged(final Consumer<List<TreeListItem>> onSelectionChanged);  }### Answer:
@Test public void testClear() { treeList.clear(); verify(view).clear(); }