public static string ToStr(this Severity severity, string format = null)
{
if (format == null)
{
return(severity.ToStrN());
}
switch (format)
{
case "u":
case "U":
return(severity.ToStrU());
case "l":
case "L":
return(severity.ToStrL());
case "G":
case "g":
case "":
case "F":
case "f":
return(severity.ToStrN());
default:
return(severity.ToString(format));
}
}