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