code: private void sendDataToClient(BufferedWriter outToClient, String kafToString)
        throws IOException {
      outToClient.write(kafToString);
      outToClient.close();
    }
docs: Send data back to server after annotation.
  
  @param outToClient
  the outputstream to the client
  @param kafToString
  the string to be processed
  @throws IOException
  if io error