System.Net.Mail.SmtpException.GetMessageForStatus C# (CSharp) Method

        private static string GetMessageForStatus(SmtpStatusCode statusCode)
        {
            switch (statusCode)
            {
                default:
                case SmtpStatusCode.CommandUnrecognized:
                    return SR.Format(SR.SmtpCommandUnrecognized);
                case SmtpStatusCode.SyntaxError:
                    return SR.Format(SR.SmtpSyntaxError);
                case SmtpStatusCode.CommandNotImplemented:
                    return SR.Format(SR.SmtpCommandNotImplemented);
                case SmtpStatusCode.BadCommandSequence:
                    return SR.Format(SR.SmtpBadCommandSequence);
                case SmtpStatusCode.CommandParameterNotImplemented:
                    return SR.Format(SR.SmtpCommandParameterNotImplemented);
                case SmtpStatusCode.SystemStatus:
                    return SR.Format(SR.SmtpSystemStatus);
                case SmtpStatusCode.HelpMessage:
                    return SR.Format(SR.SmtpHelpMessage);
                case SmtpStatusCode.ServiceReady:
                    return SR.Format(SR.SmtpServiceReady);
                case SmtpStatusCode.ServiceClosingTransmissionChannel:
                    return SR.Format(SR.SmtpServiceClosingTransmissionChannel);
                case SmtpStatusCode.ServiceNotAvailable:
                    return SR.Format(SR.SmtpServiceNotAvailable);
                case SmtpStatusCode.Ok:
                    return SR.Format(SR.SmtpOK);
                case SmtpStatusCode.UserNotLocalWillForward:
                    return SR.Format(SR.SmtpUserNotLocalWillForward);
                case SmtpStatusCode.MailboxBusy:
                    return SR.Format(SR.SmtpMailboxBusy);
                case SmtpStatusCode.MailboxUnavailable:
                    return SR.Format(SR.SmtpMailboxUnavailable);
                case SmtpStatusCode.LocalErrorInProcessing:
                    return SR.Format(SR.SmtpLocalErrorInProcessing);
                case SmtpStatusCode.UserNotLocalTryAlternatePath:
                    return SR.Format(SR.SmtpUserNotLocalTryAlternatePath);
                case SmtpStatusCode.InsufficientStorage:
                    return SR.Format(SR.SmtpInsufficientStorage);
                case SmtpStatusCode.ExceededStorageAllocation:
                    return SR.Format(SR.SmtpExceededStorageAllocation);
                case SmtpStatusCode.MailboxNameNotAllowed:
                    return SR.Format(SR.SmtpMailboxNameNotAllowed);
                case SmtpStatusCode.StartMailInput:
                    return SR.Format(SR.SmtpStartMailInput);
                case SmtpStatusCode.TransactionFailed:
                    return SR.Format(SR.SmtpTransactionFailed);
                case SmtpStatusCode.ClientNotPermitted:
                    return SR.Format(SR.SmtpClientNotPermitted);
                case SmtpStatusCode.MustIssueStartTlsFirst:
                    return SR.Format(SR.SmtpMustIssueStartTlsFirst);
            }
        }