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