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