Object object = new Object();
sortedSet.clear();
sortedSet.remove(object);
sortedSet.removeAll(Collections.singleton(object));
sortedSet.retainAll(Collections.singleton(object));
}
public void testShouldThrowUnsupportedOperationWhenAddingToNullSortedMap() throws Exception {
SortedMap map = (SortedMap)Null.object(SortedMap.class, getFactory());