load method
Load translations for locale.
The map may be nested, in which case it is flattened into dot-separated
keys when merged - see AssetLocalizations.flatten. Returning a flat
Map<String, String> remains valid.
Implementation
@override
Future<Map<String, dynamic>> load(Locale locale) async {
String path = '$basePath/${locale.languageCode}.json';
print("$runtimeType - loading '$path'");
String jsonString = await rootBundle.loadString(path);
// Decoded as-is, so nested translations survive to be flattened on merge.
return json.decode(jsonString) as Map<String, dynamic>;
}