public bool OnAddingSiteMapNode(SiteMapProviderEventContext context)
        {
            var titanNode = (ZephyrMvcSiteMapNode)context.CurrentNode;
            var provider = (ZephyrSiteMapProvider)context.Provider;

            //if this is a module node go search the module assembly for xml sitemap embedded
            if (!String.IsNullOrEmpty(titanNode.Module))
            {
                System.IO.Stream xmlResStream = Assembly.Load(titanNode.Module).
                    GetManifestResourceStream(titanNode.Module + "." +
                                              provider.SiteMapFileName);
                if (xmlResStream == null)
                    throw new MvcSiteMapException(@"Error loading xml resource from module.
            Possible reasons:
            Module sitemap filename is not exactly in same case as configured in web.config.
            Module assembly name does not match with sitemap module.");

                XDocument doc = XDocument.Load(xmlResStream);

                var rootElement = doc.Element(provider.SiteMapNamespace + provider.RootName);
                titanNode = (ZephyrMvcSiteMapNode)provider.GetSiteMapNodeFromXmlElement(rootElement, null);

                // Process our XML file, passing in the parentnode sitemap node and xml element.
                provider.ProcessXmlNodes(context.ParentNode, rootElement);

                //this node need not be added by the provider
                //as this is just a placeholder for module nodes
                return false;
            }

            return true;
        }
 public void OnAddedSiteMapNode(SiteMapProviderEventContext context)
 {
     //throw new NotImplementedException();
 }