@interface HDDemoDataMobilitySampleGenerator : HDDemoDataBaseSampleGenerator { double _nextStepLengthSampleTime; double _nextWalkingSpeedSampleTime; double _nextAsymmetryPercentageSampleTime; double _nextDoubleSupportPercentageSampleTime; double _nextSixMinuteWalkTestDistanceSampleTime; double _nextStairAscentSpeedSampleTime; double _nextStairDescentSpeedSampleTime; double _nextWalkingSteadinessSampleTime; } + (BOOL)supportsSecureCoding; - (id)init; - (void)encodeWithCoder:(id)a0; - (id)initWithCoder:(id)a0; - (void)generateFirstRunObjectsForDemoPerson:(id)a0 firstDate:(id)a1 objectCollection:(id)a2; - (void)generateObjectsForDemoPerson:(id)a0 fromTime:(double)a1 toTime:(double)a2 currentDate:(id)a3 objectCollection:(id)a4; @end