public DeviceCommandResult UpdateLedState(UpdateLedStateCommand command, CancellationToken token)
        {
            // validate input parameters
            if (command.Equipment != LED_CODE)
                return new DeviceCommandResult("Failed", "Invalid equipment parameter: " + command.Equipment);
            if (command.State == null || !new[] { 0, 1 }.Contains(command.State.Value))
                return new DeviceCommandResult("Failed", "Invalid state parameter: " + command.State);

            // switch the LED state
            Console.WriteLine("Received UpdateLedState command, setting LED state to " + command.State);
            _ledState = command.State.Value;

            // send the notification about LED state update
            ServiceChannel.SendEquipmentNotification(command.Equipment, new LedNotification(command.State.Value));

            // return the Completed status
            return new DeviceCommandResult("Completed");
        }
        public DeviceCommandResult UpdateLedState(UpdateLedStateCommand command, CancellationToken token)
        {
            // validate input parameters
            if (command.Equipment != LED_CODE)
            {
                return(new DeviceCommandResult("Failed", "Invalid equipment parameter: " + command.Equipment));
            }
            if (command.State == null || !new[] { 0, 1 }.Contains(command.State.Value))
            {
                return(new DeviceCommandResult("Failed", "Invalid state parameter: " + command.State));
            }

            // switch the LED state
            Console.WriteLine("Received UpdateLedState command, setting LED state to " + command.State);
            _ledState = command.State.Value;

            // send the notification about LED state update
            ServiceChannel.SendEquipmentNotification(command.Equipment, new LedNotification(command.State.Value));

            // return the Completed status
            return(new DeviceCommandResult("Completed"));
        }