}

  @J2ktIncompatible
  @GwtIncompatible // SerializableTester, ImmutableSortedAsList
  public void testAsListReturnTypeAndSerialization() {
    ImmutableSet<String> set = ImmutableSortedSet.of("a", "e", "i", "o", "u");
    ImmutableList<String> list = set.asList();
    assertTrue(list instanceof ImmutableSortedAsList);
    ImmutableList<String> copy = SerializableTester.reserializeAndAssert(list);