ImageSelection.GetNonHubCategories C# (CSharp) Méthode

    private static List<string> GetNonHubCategories(string id)
    {
        var hubs = new List<string>();
        if (Utils.IsRegion(id))
        {
            hubs = Utils.GetIdsForRegion(id);
            hubs = hubs.Select(t => t.ToLower()).ToList();
        }

        var es = (ZonelessEventStore)ObjectUtils.GetTypedObj<ZonelessEventStore>(id, id + ".zoneless.obj");
        var categories = Utils.GetTagsForHub(es, id, Utils.TagAndCountType.nonhub, hubs);
        //categories = categories.FindAll(x => x.Contains("{") == false).ToList();
        categories = categories.FindAll(x => String.IsNullOrWhiteSpace(x) == false);
        categories.Sort(String.CompareOrdinal);
        return categories;
    }