setup method Null safety
Implementation
static Future<void> setup() async {
  final locator = instance();
  _registerAPIs();
  _registerViewModels();
  await _registerServices(locator);
  await _registerRepos(locator);
  _registerSingletons();
}static Future<void> setup() async {
  final locator = instance();
  _registerAPIs();
  _registerViewModels();
  await _registerServices(locator);
  await _registerRepos(locator);
  _registerSingletons();
}