@interface HKCharacteristicType : HKObjectType - (id)initWithIdentifier:(id)a0; - (id)_relatedSampleForInsertionWithCharacteristicValue:(id)a0; - (id)_relatedCategoryType; - (id)_canoncialUnit; - (id)_relatedQuantityType; - (BOOL)_validateCharacteristic:(id)a0 error:(id *)a1; @end