@Override
  public int hashCode() {
    final int prime = 31;
    int result = super.hashCode();
    result = prime * result + ((extendsProp == null) ? 0 : extendsProp.hashCode());
    result = prime * result + ((properties == null) ? 0 : properties.hashCode());
    result = prime * result + ((typeFormat == null) ? 0 : typeFormat.hashCode());
    result = prime * result + ((values == null) ? 0 : values.hashCode());
    return result;
  }