@class NSString; @interface CALNNullAlarmEngineMonitor : NSObject <CALNAlarmEngineMonitor> @property (class, readonly, nonatomic) CALNNullAlarmEngineMonitor *sharedInstance; @property (readonly) unsigned long long hash; @property (readonly) Class superclass; @property (readonly, copy) NSString *description; @property (readonly, copy) NSString *debugDescription; - (void)removeAlarmsFiredObserver:(id)a0; - (void)addAlarmsFiredObserver:(id)a0 selector:(SEL)a1; @end