@interface MPUNotificationObserver : NSObject @property (retain, nonatomic) id notificationObservationToken; + (id)observerWithName:(id)a0 object:(id)a1 queue:(id)a2 observationHandler:(id /* block */)a3; - (void)dealloc; - (void).cxx_destruct; - (id)initWithName:(id)a0 object:(id)a1 queue:(id)a2 observationHandler:(id /* block */)a3; @end