getLocaleData method
The merged locale data for locale, or null if locale has not been
loaded. Data is resolved lazily from the file cache on first access.
locale is normalized so the cache key matches the one used by
loadILibLocaleData (store) and clearLocale (drop); otherwise an
un-normalized spelling such as ko_KR would miss the ko-KR entry.
Implementation
Map<String, dynamic>? getLocaleData(String locale) {
final String key = normalizeLocale(locale);
return _localeDataMap[key] ?? _mergeFromCache(key);
}