code: public After<PartialResponseInsertType<T>> getOrCreateAfter()
     {
        Node node = childNode.getOrCreate("after");
        After<PartialResponseInsertType<T>> after = new AfterImpl<PartialResponseInsertType<T>>(this, "after", childNode, node);
        return after;
     }
docs: If not already created, a new <code>after</code> element with the given value will be created.
  Otherwise, the existing <code>after</code> element will be returned.
  @return  a new or existing instance of <code>After<PartialResponseInsertType<T>></code>