init method
Implementation
Future<void> init() async {
final manifestContent = await rootBundle.loadString('AssetManifest.json', cache: false);
final Map<String, dynamic> manifestMap = json.decode(manifestContent);
manifestMap.keys
.where((String key) => key.contains('config/'))
.where((String key) => key.contains('.yaml'))
.toList()
.forEach((file) async => await _loadConfig(file));
}