@class HKQuantity, FIIntervalDefinition, NSDate, HKQuantityType; @interface FIQuantityInterval : NSObject @property (readonly, nonatomic) FIIntervalDefinition *definition; @property (readonly, nonatomic) NSDate *startDate; @property (readonly, nonatomic) HKQuantityType *trackedQuantityType; @property (readonly, nonatomic) HKQuantity *threshold; - (void).cxx_destruct; - (id)initWithIntervalDefinition:(id)a0 activityType:(unsigned long long)a1 startDate:(id)a2; @end