super(children, next);
  AbstractNumberNode(TemplateNode children, TemplateNode next,                     TemplateNode format, String lang,                     int letterValue, String groupingSeparator,                     int groupingSize)  {    super(children, next);    this.format = format;    this.lang = lang;    this.letterValue = letterValue;    this.groupingSeparator = groupingSeparator;    this.groupingSize = groupingSize;  }