Given the definition of MyServlet: public class MyServlet extends HttpServlet { public void service(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { HttpSession session = request.getSession(); session.setAttribute("myAttribute","myAttributeValue"); session.invalidate(); response.getWriter().println("value=" + session.getAttribute("myAttribute")); } } What is the result when a request is sent to MyServlet?