overrideLookup method
Implementation
String overrideLookup() => """
String? lookupMessage(
String? message_str,
String? locale,
String? name,
List<Object>? args,
String? meaning,
{MessageIfAbsent? ifAbsent}) {
String? failedLookup(
String? message_str, List<Object>? args) {
// If there's no message_str, then we are an internal lookup, e.g. an
// embedded plural, and shouldn't fail.
if (message_str == null) return null;
throw UnsupportedError(
"No translation found for message '\$name',\\n"
" original text '\$message_str'");
}
return super.lookupMessage(message_str, locale, name, args, meaning,
ifAbsent: ifAbsent ?? failedLookup);
}
""";