recordMissingKey function
Function recordMissingKey simply records the given key as a missing
translation with unknown locale. It returns the same key provided,
unaffected.
This function is visible only from the i18_exception_core package.
The i18_exception package uses a different function with the same name.
Implementation
String recordMissingKey(Object? key) {
if (Translations.recordMissingKeys)
Translations.missingKeys.add(TranslatedString(locale: "", key: key));
Translations.missingKeyCallback(key, "");
return key.toString();
}