The following code is part of a Flutter program following an MVVM architecture taught in this course. What does the code serve for? import 'package:get_it/get_it.dart'; import 'home_viewmodel.dart'; import 'user_repository.dart'; import 'product_service.dart'; Get It locator = GetIt.instance; void init() { } locator.registerLazySingleton (() => HomeViewmodel ()); locator.registerLazySingleton (() => Product Service()); locator.registerLazySingleton (() => UserRepository());