@class NSMutableData, NSMutableDictionary, NSDate; @interface HKHeartbeatSeriesBuilder : HKSeriesBuilder { NSDate *_startDate; NSMutableDictionary *_mutableMetadata; NSMutableData *_mutableHeartbeats; unsigned long long _count; double _lastHeartbeatTimeInterval; } @property (class, readonly) unsigned long long maximumCount; - (void)discard; - (void).cxx_destruct; - (void)_resourceQueue_addHeartbeatWithTimeIntervalSinceSeriesStartDate:(double)a0 precededByGap:(BOOL)a1 completion:(id /* block */)a2; - (void)_resourceQueue_addMetadata:(id)a0 completion:(id /* block */)a1; - (void)_resourceQueue_finishSeriesWithCompletion:(id /* block */)a0; - (void)addHeartbeatWithTimeIntervalSinceSeriesStartDate:(double)a0 precededByGap:(BOOL)a1 completion:(id /* block */)a2; - (void)addMetadata:(id)a0 completion:(id /* block */)a1; - (void)finishSeriesWithCompletion:(id /* block */)a0; - (id)initWithHealthStore:(id)a0 device:(id)a1 startDate:(id)a2; @end