StartCallback<TStores> typedef
StartCallback<TStores> =
FutureOr<void> Function(FeatureScopeApi<TStores> api, Cleanup cleanup)
Per-activation callback run by AppContainer on inactive→active
transitions. The user registers teardown via cleanup.add(disposer) —
all registered disposers run in LIFO order on deactivation.
Implementation
typedef StartCallback<TStores> =
FutureOr<void> Function(FeatureScopeApi<TStores> api, Cleanup cleanup);