HealthKit sort descriptors Identifiers for sorting results. TopicsSample sort identifiersHKSampleSortIdentifierStartDateHKSampleSortIdentifierEndDateWorkout sort identifiersHKWorkoutSortIdentifierDurationHKWorkoutSortIdentifierTotalDistanceHKWorkoutSortIdentifierTotalFlightsClimbedHKWorkoutSortIdentifierTotalEnergyBurnedHKWorkoutSortIdentifierTotalSwimmingStrokeCount