assertTrue(elementsEqual(LegacyComparable.VALUES_BACKWARD, set));
  }

  @SuppressWarnings({"deprecation", "static-access", "DoNotCall"})
  public void testBuilderMethod() {
    assertThrows(UnsupportedOperationException.class, () -> ImmutableSortedSet.builder());
  }

  public void testAsList() {
    ImmutableSet<String> set = ImmutableSortedSet.of("a", "e", "i", "o", "u");