code: public static ExecutorService getExecutorService() {
          CHFWBundle c = instance.get().get();
          if (null != c) {
              return c.executorService;
          }
          return null;
      }
docs: Access the channel framework's {@link java.util.concurrent.ExecutorService} to
  use for work dispatch.
  
  @return the executor service instance to use within the channel framework