namespace System.Xml { internal static class MailBnfHelper { public static bool SkipCFWS(string data, ref int offset); public static string ReadQuotedString(string data, ref int offset, StringBuilder builder); public static string ReadParameterAttribute(string data, ref int offset, StringBuilder builder); public static string ReadParameterValue(string data, ref int offset, StringBuilder builder); public static string ReadToken(string data, ref int offset, StringBuilder builder); public static string ReadDigits(string data, ref int offset, StringBuilder builder); public static bool IsValidMimeBoundary(string data); } }