Build a MVC RadioButtonList Helper

I want a Radio Button List for my MVC site. There is no out of box solution for it. But it is pretty easy to build your own.

        public static MvcHtmlString RadioButtonForSelectList<TModel, TProperty>( 
            this HtmlHelper<TModel> htmlHelper, 
            Expression<Func<TModel, TProperty>> expression, 
            IEnumerable<SelectListItem> listOfValues) 
            var metaData = ModelMetadata.FromLambdaExpression(expression, htmlHelper.ViewData); 
            var sb = new StringBuilder();

            if (listOfValues != null) 
                // Create a radio button for each item in the list 
                foreach (SelectListItem item in listOfValues) 
                    // Generate an id to be given to the radio button field 
                    var id = string.Format("{0}_{1}", metaData.PropertyName, item.Value);

                    // Create and populate a radio button using the existing html helpers 
                    var label = htmlHelper.Label(id, HttpUtility.HtmlEncode(item.Text)); 
                    var radio = htmlHelper.RadioButtonFor(expression, item.Value, new { id = id }).ToHtmlString();

                    // Create the html string that will be returned to the client 
                    // e.g. <input data-val="true" data-val-required="You must select an option" id="TestRadio_1" name="TestRadio" type="radio" value="1" /><label for="TestRadio_1">Line1</label> 
                    sb.AppendFormat("<div class=\"RadioButton\">{0}{1}</div>", radio, label); 

            return MvcHtmlString.Create(sb.ToString());