fromCodeName function
convert from the code-name
Implementation
String fromCodeName(String str) {
final nonEscaped = str.replaceAll(_escape, '=');
final prefixRemoved = nonEscaped.replaceFirst(_prefix, '');
final encoded = prefixRemoved.toUpperCase();
final bytes = base32.decode(encoded);
final decoded = utf8.decode(bytes);
return decoded;
}