@class NSMutableArray; @interface HDHeadphoneAudioExposureBucketCollection : NSObject { NSMutableArray *_storage; struct os_unfair_lock_s { unsigned int _os_unfair_lock_opaque; } _lock; } @property (nonatomic, getter=isDirty) BOOL dirty; - (void)clear; - (void)pruneWithNowDate:(id)a0; - (id)init; - (id)_bucketsWithEarliestStartDate:(id)a0 resetDoseToZero:(BOOL)a1 error:(id *)a2; - (id)copyWithEarliestStartDate:(id)a0 resetDoseToZero:(BOOL)a1 error:(id *)a2; - (void)insertBuckets:(id)a0; - (id)_lock_snapshotStatisticsForNowDate:(id)a0 error:(id *)a1; - (id)snapshotStatisticsForNowDate:(id)a0 error:(id *)a1; - (void).cxx_destruct; - (id)unitTesting_snapshotBuckets; - (id)initWithBuckets:(id)a0; - (id)_updateWithSampleBatch:(id)a0 needsRebuild:(BOOL *)a1 error:(id *)a2; - (id)_lock_updateWithSampleBatch:(id)a0 error:(id *)a1; @end