public void testTwo() {
   List xs = Arrays.asList(new String[] {"a", "b"});
   TrueIterator it = new TrueIterator(xs.iterator());
   it.next();
   try {
     it.remove();
     fail("Remove should be unsupported.");
   } catch (UnsupportedOperationException e) {
     assertTrue(true);
   }
 }