text: public NPOI.SS.UserModel.IName GetNameAt(int nameIndex){int nNames = names.Count;if (nNames < 1){throw new InvalidOperationException("There are no defined names in this workbook");}if (nameIndex < 0 || nameIndex > nNames){throw new ArgumentOutOfRangeException("Specified name index " + nameIndex+ " is outside the allowable range (0.." + (nNames - 1) + ").");}HSSFName result = names[nameIndex];return result;}