code: public MessageDestinationRefType<EntityBeanType<T>> getOrCreateMessageDestinationRef()
     {
        List<Node> nodeList = childNode.get("message-destination-ref");
        if (nodeList != null &&  nodeList.size() > 0)
        {
           return new MessageDestinationRefTypeImpl<EntityBeanType<T>>(this, "message-destination-ref", childNode, nodeList.get(0));
        }
        return createMessageDestinationRef();
     }
docs: If not already created, a new <code>message-destination-ref</code> element will be created and returned.
  Otherwise, the first existing <code>message-destination-ref</code> element will be returned.
  @return the instance defined for the element <code>message-destination-ref</code>