@class NSObject; @protocol OS_dispatch_source, ARMemoryPressureMonitorDelegate; @interface ARMemoryPressureMonitor : NSObject { NSObject<OS_dispatch_source> *_memoryPressureEventSource; } @property (weak, nonatomic) id<ARMemoryPressureMonitorDelegate> delegate; - (id)init; - (void)dealloc; - (void).cxx_destruct; @end