destroy method
Unsubscribe from this collection and close the event streams Also closes the event stream of each model within this collection.
Implementation
Future<void> destroy() async {
await client.send("unsubscribe", rid, null);
await addEventsController.close();
await removeEventsController.close();
await addListener.cancel();
await removeListener.cancel();
for (var model in models) {
await model.destroy();
}
models.clear();
}