code: public List<Id<Attributes<T>>> getAllId()
     {
        List<Id<Attributes<T>>> list = new ArrayList<Id<Attributes<T>>>();
        List<Node> nodeList = childNode.get("id");
        for(Node node: nodeList)
        {
           Id<Attributes<T>>  type = new IdImpl<Attributes<T>>(this, "id", childNode, node);
           list.add(type);
        }
        return list;
     }
docs: Returns all <code>id</code> elements
  @return list of <code>id</code>