facesContext.getExternalContext()).getServicesRegistry();
facesContext).getServicesRegistry();
    public static AbstractAsyncRenderService getInstance(            FacesContext facesContext) {        IServicesRegistry serviceRegistry = RcfacesContext.getInstance(                facesContext.getExternalContext()).getServicesRegistry();        return (AbstractAsyncRenderService) serviceRegistry.getService(                facesContext, RenderKitFactory.HTML_BASIC_RENDER_KIT,                SERVICE_ID);    }