public Selector ToDateString()
        {
            var res = new JSDateTimeSelector(this);

            res.AddMethod("toDateString");
            return(res);
        }
        public Selector GetTimezoneOffset()
        {
            var res = new JSDateTimeSelector(this);

            res.AddMethod("getTimezoneOffset");
            return(res);
        }
        public Selector GetFullYear()
        {
            var res = new JSDateTimeSelector(this);

            res.AddMethod("getFullYear");
            return(res);
        }
        public Selector GetDay()
        {
            var res = new JSDateTimeSelector(this);

            res.AddMethod("getDay");
            return(res);
        }