code: public static void setPersistentMenus(List<PersistentMenu> persistentMenu) {
  		PersistentMenuRequest persistentMenuRequest = new PersistentMenuRequest();
  		persistentMenuRequest.addAllPersistentMenu(persistentMenu);
  		FbBotMillNetworkController.postMessengerProfile(persistentMenuRequest);
  	}
docs: Sets the persistent menus.
  
  @param persistentMenu
  the new persistent menus
  
  @see <a href=
  "https://developers.facebook.com/docs/messenger-platform/messenger-profile/persistent-menu">
  Facebook's Messenger Platform Persistent Menu Documentation</a>