*/
protected CreateElementsWithinContainer createContainerHandler(InferContainedElementsAction action) throws JaxenException {
Frame page = assertHasFrame(root, "container");
DomainIterator di = assertHasDomainIterator(page, "domain object instance");
return action.new CreateElementsWithinContainer(di, CachedModelInferer.getInstance().createCreateElementsFactory().createHandler(root));
}