@Override
    public int hashCode() {
      return clazz.hashCode();
    }

    @Override
    public boolean equals(@Nullable Object obj) {
      if (obj instanceof SubtypeOfPredicate) {
        SubtypeOfPredicate that = (SubtypeOfPredicate) obj;
        return clazz == that.clazz;
      }
      return false;
    }

    @Override
    public String toString() {