public static String format(String rawSheetName) {StringBuilder sb = new StringBuilder((rawSheetName == null ? 0 : rawSheetName.length()) + 2);appendFormat(sb, rawSheetName);return sb.toString();}

public static String Format(String rawSheetName){StringBuilder sb = new StringBuilder(rawSheetName.Length + 2);AppendFormat(sb, rawSheetName);return sb.ToString();}
