get<T> method
Lookup a service from this container and its ancestors
Implementation
T get<T>({String? tag}) {
final key = _key(T, tag);
if (_services.containsKey(key)) {
return _services[key]!.getInstance() as T;
} else {
if (parent != null) {
return parent!.get<T>(tag: tag);
}
throw Exception('$key is not registered');
}
}