public void start() {
   repeatingActivity.start();
   exhibitor
       .getConfigManager()
       .addConfigListener(
           new ConfigListener() {
             @Override
             public void configUpdated() {
               repeatingActivity.setTimePeriodMs(
                   exhibitor.getConfigManager().getConfig().getInt(IntConfigs.CHECK_MS));
             }
           });
 }
 @Override
 public void close() throws IOException {
   repeatingActivity.close();
 }