Contract for Enum.GetName incorrectly states result not null #478

            foreach (char c in text)
                {
                var b = (byte)c;
                var strASCII = Enum.GetName(typeof(AsciiSymbols), b);
                if (strASCII != null)
                    expanded.Append("<" + strASCII + ">");
                else
                    expanded.Append(c);
                }