@interface NSUnitArea : NSDimension <NSSecureCoding> @property (class, nonatomic, readonly) BOOL supportsRegionalPreference; @property (class, readonly, copy) NSUnitArea *squareMegameters; @property (class, readonly, copy) NSUnitArea *squareKilometers; @property (class, readonly, copy) NSUnitArea *squareMeters; @property (class, readonly, copy) NSUnitArea *squareCentimeters; @property (class, readonly, copy) NSUnitArea *squareMillimeters; @property (class, readonly, copy) NSUnitArea *squareMicrometers; @property (class, readonly, copy) NSUnitArea *squareNanometers; @property (class, readonly, copy) NSUnitArea *squareInches; @property (class, readonly, copy) NSUnitArea *squareFeet; @property (class, readonly, copy) NSUnitArea *squareYards; @property (class, readonly, copy) NSUnitArea *squareMiles; @property (class, readonly, copy) NSUnitArea *acres; @property (class, readonly, copy) NSUnitArea *ares; @property (class, readonly, copy) NSUnitArea *hectares; @property (class, readonly) BOOL supportsSecureCoding; + (void)initialize; + (id)icuType; + (id)baseUnit; + (id)_measurementWithNaturalScale:(id)a0 system:(unsigned long long)a1; @end