public RTParsingError(int startIndex, int endIndex, RTErrorCode errorCode, string errorMessage)
 {
     this._startIndex = startIndex;
     this._endIndex = endIndex;
     this._errorCode = errorCode;
     this._errorMessage = errorMessage;
 }
 internal RTExecutionError(RTScope func, RTErrorCode errCode, string errMsg)
     : base(func.Creator.SourceStartIndex, func.Creator.SourceEndIndex, errCode, errMsg)
 {
     this.FunctionName = func.FunctionName;
 }