in 7.6 how do i use this with nested content? about umbraco-multi-url-picker HOT 2 CLOSED

@{
     var footerLinks = site.FooterLinks ?? Enumerable.Empty<IPublishedContent>();

    <div class="row">
        @foreach (var item in footerLinks)
        {
            var links = item.GetPropertyValue<IEnumerable<Link>>("links");

            <div class="col-sm-4 col-md-4">
                <h3>@item.GetPropertyValue("heading")</h3>
                @if (links != null && links.Any())
                {
                    <ul class="list-unstyled links">
                        @foreach (var link in links)
                        {
                            <li><a href="@link.Url" title="@link.Name" target="@link.Target">@link.Name</a></li>
                        }
                    </ul>
                }
            </div>
        }
    </div>
}

@{
     var footerLinks = site.FooterLinks ?? Enumerable.Empty<IPublishedContent>();

    <div class="row">
        @foreach (var item in footerLinks.OfType<NestedLinks>())
        {
            <div class="col-sm-4 col-md-4">
                <h3>@item.Heading</h3>
                @if (item.Links != null && item.Links.Any())
                {
                    <ul class="list-unstyled links">
                        @foreach (var link in item.Links)
                        {
                            <li><a href="@link.Url" title="@link.Name" target="@link.Target">@link.Name</a></li>
                        }
                    </ul>
                }
            </div>
        }
    </div>
}