code: public void registerDeviceAsync(String deviceId, RegisterCallback callback) {
          final Device d = new Device.Builder(projectId).id(deviceId).build();
          registerDeviceAsync(d, callback);
      }
docs: Registers a device asynchronously with the provided device ID.
  
  See {@link #registerDeviceAsync(Device, RegisterCallback)} for more details.
  
  @param deviceId Desired device ID.
  @param callback Callback for result of the registration.
  @throws ApiException Thrown if the iobeam client is not initialized.