}

  public void testSerializableOnReturnValues_bad() throws Exception {
    try {
      tester.forAllPublicStaticMethods(BadSerializableFactory.class).testSerializable();
    } catch (AssertionError expected) {
      return;
    }
    fail();
  }

  public static final class BadSerializableFactory {
    public static Object bad() {
      return new Serializable() {