install method
Implementation
@override
void install(ContainerRegister register) {
register.addWidget((p, key, args) => AppWidget(p.get(), key: key));
register
.add((p) => FakeInitializable(), Lifetime.singleton)
.as<Initializable>();
register
.addScopeForWidget((p, key, args) => HomeScope(key: key, args: args));
}