@class HKElectrocardiogram, HKUnit; @interface _HKElectrocardiogramVoltageMeasurementEnumerator : NSEnumerator { HKElectrocardiogram *_electrocardiogram; double _samplingHertz; HKUnit *_microvoltsUnit; long long _index; struct __wrap_iter<const float *> { float *__i_; } _current; struct __wrap_iter<const float *> { float *__i_; } _end; } - (id)nextObject; - (id).cxx_construct; - (void).cxx_destruct; - (id)initWithElectrocardiogram:(id)a0 leadIMicroVoltsBegin:(struct __wrap_iter<const float *> { float *x0; })a1 end:(struct __wrap_iter<const float *> { float *x0; })a2; @end