return ImmutableSet.copyOf(elements);
    }
  }

  public static class DegeneratedImmutableSetGenerator extends TestStringSetGenerator {
    // Make sure we get what we think we're getting, or else this test
    // is pointless
    @SuppressWarnings("cast")
    @Override
    protected Set<String> create(String[] elements) {
      return (ImmutableSet<String>) ImmutableSet.of(elements[0], elements[0]);

      return ImmutableSet.copyOf(elements);
    }
  }

  public static class DegeneratedImmutableSetGenerator extends TestStringSetGenerator {
    // Make sure we get what we think we're getting, or else this test
    // is pointless
    @SuppressWarnings("cast")
    @Override
    protected Set<String> create(String[] elements) {
      return (ImmutableSet<String>) ImmutableSet.of(elements[0], elements[0]);