@class NSMutableArray; @interface HKHeartbeatSequenceChartData : NSObject @property (readonly, nonatomic) NSMutableArray *sections; @property (nonatomic) double initialXAxisOffset; - (id)init; - (void).cxx_destruct; - (long long)sectionCount; - (void)_expandToSection:(long long)a0; - (void)addSequencePoint:(id)a0 section:(long long)a1; - (void)enumerateSequences:(id /* block */)a0; @end