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