protected override IHtmlNode BuildCore()
{
var title = column.Title.HasValue() ? column.Title : " ";
return new HtmlTag("th")
.Attributes(column.HeaderHtmlAttributes)
.ToggleClass(UIPrimitives.LastHeader, column.IsLast)
.AddClass(UIPrimitives.Header)
.Attribute("scope", "col")
.Html(title);
}