com.clover.remotepay.transport.CloverTransport.sendMessage C# (CSharp) Method

        public abstract int sendMessage(string message);

 public void onDeviceReady(CloverTransport device)
 {
     string message = "{" +
         "\"id\":\"208\"," +
         "\"method\":\"DISCOVERY_REQUEST\"," +
         "\"packageName\":\"com.clover.remote.protocol.usb\"," +
         "\"payload\":\"{\\\"method\\\":\\\"DISCOVERY_REQUEST\\\",\\\"version\\\":1}\"," +
         "\"type\":\"COMMAND\"" +
         "}";
     ConsoleKeyInfo info;
     do
     {
         device.sendMessage(message);
         // Wait for user input..
         info = Console.ReadKey();
     } while (info.KeyChar != 'x');
 }