Jetty embedded with Vaadin. How to add static content folder?

Good day.
I have a Vaadin 7 started on Jetty embedded. It works good.
Now i need to load some static content from folder (HTML,JS) inside JAR.
How can i do it?
Already works code with only Vaadin:

Server server = new Server();

        /**
         * ServletContextHandler
         */
        ServletContextHandler servletContextHandler = new ServletContextHandler(ServletContextHandler.SESSIONS);
        servletContextHandler.setContextPath("/");

        /**
         * ContextHandler for Vaadin
         */
        ServletHolder servletHolderVaadin = new ServletHolder(new VaadinServlet());
        servletContextHandler.addServlet(servletHolderVaadin, "/*");
        servletContextHandler.setInitParameter("ui", VaadinUI.class.getCanonicalName());

        server.setHandler(servletContextHandler);

Resolved.

ServletContextHandler servletContextHandler = new ServletContextHandler(ServletContextHandler.SESSIONS);
        servletContextHandler.setContextPath("/");
        inetAccessHandler2.setHandler(servletContextHandler);

        ServletHolder holderHome = new ServletHolder("static-home", DefaultServlet.class);
        String pwdPath = System.getProperty("user.dir");
        holderHome.setInitParameter("resourceBase", pwdPath + "/_phone");
        holderHome.setInitParameter("dirAllowed","true");
        holderHome.setInitParameter("pathInfoOnly","true");
        servletContextHandler.addServlet(holderHome, "/_phone/*");

        ServletHolder servletHolderVaadin = new ServletHolder(new VaadinServlet());
        servletContextHandler.setInitParameter("ui", VaadinUI.class.getCanonicalName());
        servletContextHandler.addServlet(servletHolderVaadin, "/*");