code: public ActivationConfigType<MessageDrivenBeanType<T>> getOrCreateActivationConfig()
     {
        Node node = childNode.getOrCreate("activation-config");
        ActivationConfigType<MessageDrivenBeanType<T>> activationConfig = new ActivationConfigTypeImpl<MessageDrivenBeanType<T>>(this, "activation-config", childNode, node);
        return activationConfig;
     }
docs: If not already created, a new <code>activation-config</code> element with the given value will be created.
  Otherwise, the existing <code>activation-config</code> element will be returned.
  @return  a new or existing instance of <code>ActivationConfigType<MessageDrivenBeanType<T>></code>