@class NSMutableDictionary, NSObject; @protocol OS_dispatch_queue; @interface NFBackgroundActivityScheduler : NSObject @property (nonatomic) BOOL invalidated; @property (retain, nonatomic) NSObject<OS_dispatch_queue> *queue; @property (retain, nonatomic) NSMutableDictionary *activityMap; - (id)initWithQueue:(id)a0; - (void)unregisterActivity:(id)a0; - (void).cxx_destruct; - (void)registerActivity:(id)a0 identifier:(id)a1; - (void)schedulePreRegisteredActivity:(id)a0 callback:(id /* block */)a1; - (id)getActivity:(id)a0; - (void)backgroundActivityScheduler:(id)a0 interval:(double)a1 tolerance:(double)a2 repeats:(BOOL)a3 qualityOfService:(long long)a4 delay:(double)a5 callback:(id /* block */)a6; @end