ImmutableSortedMap.reverseOrder();
  }

  private static class SuperComparableExample extends SelfComparableExample {}

  public void testBuilderGenerics_superComparable() {
    ImmutableSortedMap.Builder<SuperComparableExample, Object> unusedNatural =
        ImmutableSortedMap.naturalOrder();

    ImmutableSortedMap.Builder<SuperComparableExample, Object> unusedReverse =
        ImmutableSortedMap.reverseOrder();
  }

  }

  private static class SuperComparableExample extends SelfComparableExample {}

  public void testBuilderGenerics_superComparable() {
    // testing simple creation
    ImmutableSortedSet.Builder<SuperComparableExample> natural = ImmutableSortedSet.naturalOrder();
    assertThat(natural).isNotNull();
    ImmutableSortedSet.Builder<SuperComparableExample> reverse = ImmutableSortedSet.reverseOrder();