I am currently working on a console application running Umbraco, based on the code I found here. I can access Umbraco ContentService through the Current.Services.ContentService class. However, I do not know how to obtain the content Urls in this setup. UmbracoContext is null inside the console application. I tried with IUmbracoContextFactory.EnsureUmbracoContext() but a nullReferenceException is thrown. How can I do?

 class Program
 {
    static void Main(string[] args)
    {
        var application = new SidecarApplication();
        application.Start();

        var contentService = Current.Services.ContentService;
        var contentItems = contentService.GetRootContent(); // I need the Url of these contents
    }
}