private static final Comparator<Integer> INT_COMPARATOR =
      Ordering.<Integer>natural().reverse().nullsFirst();

  @SuppressWarnings("deprecation")
  public void testUnmodifiableListMultimapShortCircuit() {
    ListMultimap<String, Integer> mod = ArrayListMultimap.create();
    ListMultimap<String, Integer> unmod = Multimaps.unmodifiableListMultimap(mod);
    assertNotSame(mod, unmod);