@Test
 public void toSortedList() {
   ImmutableBag<String> strings = this.newBag();
   MutableList<String> copy = FastList.newList(strings);
   MutableList<String> list = strings.toSortedList(Collections.<String>reverseOrder());
   Assert.assertEquals(copy.sortThis(Collections.<String>reverseOrder()), list);
   MutableList<String> list2 = strings.toSortedList();
   Assert.assertEquals(copy.sortThis(), list2);
 }