@class NSUUID, HKQuantity; @interface HKWorkoutZone : NSObject <NSSecureCoding, NSCopying> @property (class, readonly) BOOL supportsSecureCoding; @property (readonly, copy, nonatomic) NSUUID *identifier; @property (readonly, copy, nonatomic) HKQuantity *startQuantity; @property (readonly, copy, nonatomic) HKQuantity *endQuantity; - (void)encodeWithCoder:(id)a0; - (id)description; - (void).cxx_destruct; - (BOOL)isEqual:(id)a0; - (id)initWithCoder:(id)a0; - (id)copyWithZone:(struct _NSZone { } *)a0; - (id)initWithIdentifier:(id)a0 startQuantity:(id)a1 endQuantity:(id)a2; @end