public override string ToString()
{
StringBuilder stbuilder = new StringBuilder();
stbuilder.Append(this.prefixSpan.startAt + " " + this.prefixSpan.len);
stbuilder.Append(" " + this.dbugDataState);
//---------
if (wordSpanList != null)
{
stbuilder.Append(",u_index=" + wordSpanList.Count + " ");
}
return stbuilder.ToString();
}
#endif