private void Execute(ISender client, GetWebcamDevices message)
        {
            ArrayList webcamDevices = _webcamHelper.GetDevices();
            var       deviceList    = new List <Tuple <int, string> >();

            for (int i = 0; i < webcamDevices.Count; i++)
            {
                deviceList.Add(Tuple.Create(i, webcamDevices[i].ToString()));
            }
            client.Send(new GetWebcamDevicesResponse {
                WebcamDevices = deviceList
            });
        }