public static void Execute()
        {
            var settings = new JsonSerializerSettingsFacade();

            settings.NullValueHandling     = NullValueHandling.Ignore;
            settings.ReferenceLoopHandling = ReferenceLoopHandling.Serialize;
            Serialize(new object(), settings);
        }
 public static void Serialize(object x, JsonSerializerSettingsFacade settings)
 {
     //...
 }