private static NormalizedPath GetPath(IDocument doc)
        {
            Page   page = doc.AsKontent <Page>();
            string path;

            if (page.Url == "404")
            {
                path = $"{page.Url}.html";
            }
            else
            {
                path = $"pages/{page.Url}/index.html";
            }
            return(new NormalizedPath(path));
        }