@interface NSUnitElectricPotentialDifference : NSDimension <NSSecureCoding> @property (class, readonly, copy) NSUnitElectricPotentialDifference *megavolts; @property (class, readonly, copy) NSUnitElectricPotentialDifference *kilovolts; @property (class, readonly, copy) NSUnitElectricPotentialDifference *volts; @property (class, readonly, copy) NSUnitElectricPotentialDifference *millivolts; @property (class, readonly, copy) NSUnitElectricPotentialDifference *microvolts; @property (class, readonly) BOOL supportsSecureCoding; + (void)initialize; + (id)icuType; + (id)baseUnit; + (id)_measurementWithNaturalScale:(id)a0 system:(unsigned long long)a1; @end