code: @Autowired ( required = false )
    public void register(OAuthTokenLifecycleListener... lifecycleListeners) {
      if (lifecycleListeners != null) {
        this.lifecycleListeners.addAll(Arrays.asList(lifecycleListeners));
      }
    }
docs: Register lifecycle listener(s) with these token services.
  
  @param lifecycleListeners The listeners.