@interface WorkoutCore.HeartRateTargetZone : _TtCs12_SwiftObject {
void /* unknown type, empty encoding */ type;
void /* unknown type, empty encoding */ customRange;
void /* unknown type, empty encoding */ defaultZoneIndex;
void /* unknown type, empty encoding */ defaultZones;
void /* unknown type, empty encoding */ defaultZonesDidLoad;
void /* unknown type, empty encoding */ restingHeartRateUsesDefault;
}
@end