text: public override String ToString(){StringBuilder sb = new StringBuilder();sb.Append("[SUPBOOK ");if (IsExternalReferences){sb.Append("External References]\n");sb.Append(" .url     = ").Append(field_2_encoded_url).Append("\n");sb.Append(" .nSheets = ").Append(field_1_number_of_sheets).Append("\n");foreach (String sheetname in field_3_sheet_names){sb.Append("    .name = ").Append(sheetname).Append("\n");}sb.Append("[/SUPBOOK");}else if (_isAddInFunctions){sb.Append("Add-In Functions");}else{sb.Append("Internal References ");sb.Append(" nSheets= ").Append(field_1_number_of_sheets);}return sb.ToString();}