try {
      assertThat(actual).isNotEqualTo(unexpected);
    } catch (ClassCastException accepted) {
    }
  }

  public void testHeadSetInclusive() {
    String[] strings = NUMBER_NAMES.toArray(new String[0]);
    ImmutableSortedSet<String> set = ImmutableSortedSet.copyOf(strings);
    sort(strings);
    for (int i = 0; i < strings.length; i++) {