code: public List<UserAttributeType<PortletAppType<T>>> getAllUserAttribute()
     {
        List<UserAttributeType<PortletAppType<T>>> list = new ArrayList<UserAttributeType<PortletAppType<T>>>();
        List<Node> nodeList = childNode.get("user-attribute");
        for(Node node: nodeList)
        {
           UserAttributeType<PortletAppType<T>>  type = new UserAttributeTypeImpl<PortletAppType<T>>(this, "user-attribute", childNode, node);
           list.add(type);
        }
        return list;
     }
docs: Returns all <code>user-attribute</code> elements
  @return list of <code>user-attribute</code>