{
ComponentResources resources = value.getComponentResources();
String pageName = resources.getPageName();
Page page = _cache.get(pageName);
String nestedId = resources.getNestedId();
// The user may return a complete page instance, which isn't really a partial render, I guess.
// Depends on the structure of the page returned.
RenderCommand command = nestedId == null ? page.getRootElement() : page.getComponentElementByNestedId(nestedId);
_renderer.renderPartialPageMarkup(command);
}