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