@Test
 public void testContainsAll() {
   MutableList<String> list = new CompositeFastList<String>();
   list.addAll(FastList.newListWith("1", "2", "3", "4"));
   list.addAll(FastList.newListWith("3", "B", "3", "B"));
   Assert.assertTrue(list.containsAll(FastList.newList().with("2", "B")));
 }