.testEqualsAndSerializable();
  }

  public static class FactoryThatReturnsNullAndAnnotated {
    public static @Nullable Object bad() {
      return null;
    }
  }

  public void testGoodEquals() throws Exception {
    tester.testEquals(GoodEquals.class);
  }

  public void testEquals_interface() {
    tester.testEquals(AnInterface.class);
  }

  public void testEquals_abstractClass() {