private async void RfcommScanner_Added(object sender, Bluetooth.IBluetoothDevice e)
        {
            if (e.Address == BluetoothUtils.AddressStringToInt64("DC:53:60:DD:AE:63"))
            {
                //var serviceResult = await e.GetRfcommServicesAsync();
                await e.RfcommConnectAsync();

                //var serviceResult = await e.GetRfcommServicesForIdAsync(Constants.ServiceId);
                var serviceResult = await e.GetRfcommServicesAsync();

                IRfcommDeviceService service = null;
                if (serviceResult.Error == BluetoothError.Success && serviceResult.Services.Count > 0)
                {
                    foreach (var ser in serviceResult.Services)
                    {
                        if (ser.ServiceId == Constants.ServiceId)
                        {
                            service = ser;
                            break;
                        }
                    }
                }
                if (service == null)
                {
                    return;
                }
                var connection = new RfcommRXConnection(service, ConnectionGroup);
                OnConnectionReceived?.Invoke(this, connection);
            }
        }
        private void ServiceProvier_OnConnectionReceived(object sender, IRfcommConnection e)
        {
            RfcommRXConnection rxConnection = new RfcommRXConnection(e, ConnectionGroup);

            ConnectionReceived?.Invoke(this, rxConnection);
        }