code: public void addAction(int icon, CharSequence title, Action.OnActionListener listener,
                            ComponentName activity, ComponentName service, String broadcast,
                            Bundle extra) {
          addAction(new Action(icon, title, listener, activity, service, broadcast, extra));
      }
docs: Add a action to this notification. Actions are typically displayed as a
  button adjacent to the notification content.
  
  @see android.app.Notification#addAction
  
  @param icon
  @param title
  @param listener
  @param activity The activity to be started.
  @param service The service to be started.
  @param broadcast The broadcast to be sent.
  @param extra