RLMNotificationToken

@interface RLMNotificationToken : NSObject

A token which is returned from methods which subscribe to changes to a Realm.

Change subscriptions in Realm return an RLMNotificationToken instance, which can be used to unsubscribe from the changes. You must store a strong reference to the token for as long as you want to continue to receive notifications. When you wish to stop, call the -stop method. Notifications are also stopped if the token is deallocated.