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