private Map<Object, Object> getRequestContext() {
   Map<Object, Object> store =
       (Map<Object, Object>) request.getAttribute("org.juzu.request_scope");
   if (store == null) {
     request.setAttribute("org.juzu.request_scope", store = new HashMap<Object, Object>());
   }
   return store;
 }
 private Map<Object, Object> getSessionContext() {
   PortletSession session = request.getPortletSession();
   Map<Object, Object> store =
       (Map<Object, Object>) session.getAttribute("org.juzu.session_scope");
   if (store == null) {
     session.setAttribute("org.juzu.session_scope", store = new HashMap<Object, Object>());
   }
   return store;
 }
 public final Map<String, String[]> getParameters() {
   return request.getParameterMap();
 }