/// <summary>
 /// 获取当前读取数据标识
 /// </summary>
 /// <returns></returns>
 internal override Node RunTask()
 {
     reader.Get(this);
     return(LinkNext);
 }
 /// <summary>
 /// 获取当前读取数据标识
 /// </summary>
 public override void RunTask()
 {
     reader.Get(this);
 }