readAttributeWhitePointX(completion:)
Declaration
func readAttributeWhitePointX(completion: @escaping @Sendable (NSNumber?, (any Error)?) -> Void)func readAttributeWhitePointX() async throws -> NSNumberfunc readAttributeWhitePointX(completion: @escaping @Sendable (NSNumber?, (any Error)?) -> Void)func readAttributeWhitePointX() async throws -> NSNumber