Why doesn't FutureProvider have a dispose callback?

Managing an object's complete lifecycle via Provider is possible:

Provider<LocalStorageManager>(
  create: (context) => LocalStorageManager(),
  dispose: (context, obj) => obj.dispose(),
),

However, if the object has to be asynchronously initialized, we have to use FutureProvider:

FutureProvider<LocalStorageManager>(
  create: (context) async => await LocalStorageManager().initialize(),
),

If FutureProvider has no dispose callback, how should I dispose of LocalStorageManager?

Furthermore, what is the difference with FutureProvider.value if the lifecycle is not managed?