code: public void callManager(final Event event, final Callback callback) {
          if (delegate instanceof DefaultCommunicationClientImpl) {
              DefaultCommunicationClientImpl defaultClient = (DefaultCommunicationClientImpl) delegate;
              defaultClient.submit(new Runnable() {
  
                  @Override
                  public void run() {
                      Object result = callManager(event);
                      callback.call(result);
                  }
              });
          }
      }
docs: 指定manager，进行event调用
  
  <pre>
  注意：该方法为异步调用
  </pre>