private IEnumerable <NavigationGroup> BuildMenu()
        {
            var builder = new NavigationBuilder();

            builder
            .UsingGroup("Scheduler")
            .WithDisplayName("Scheduler")
            .WithLink("List clients", cfg => cfg.Url("clients").Template("list-clients.html").LinkToGroup())
            .WithLink("List commands", cfg => cfg.Url("commands").Template("list-commands.html"))
            .WithLink("List logs", cfg => cfg.Url("logs").Template("list-logs.html"))
            ;

            return(builder.Groups.Select(x => x.Build()));
        }