@class NSString; @interface HKTimePeriodWithSecondsNumberFormatter : NSObject <HKNumberFormatter> @property (nonatomic) BOOL allowMillisecondPrecision; @property (nonatomic) unsigned long long secondsRoundingMode; @property (readonly) unsigned long long hash; @property (readonly) Class superclass; @property (readonly, copy) NSString *description; @property (readonly, copy) NSString *debugDescription; - (id)init; - (BOOL)returnsUnitWithValueForDisplay; - (id)stringFromNumber:(id)a0 displayType:(id)a1 unitController:(id)a2; @end