FluentTagBuilderHelperExtensions.cs

public static class FluentTagBuilderHelperExtensions
{
    public static FluentTagBuilder Tag(this HtmlHelper helper, string tagName)
    {
        return new FluentTagBuilder(tagName);
    }

    public static HtmlString DynamicPlaceholder(this SitecoreHelper sitecoreHelper, string placeholderName,
        FluentTagBuilder chrome, int count = 1, int maxCount = 0, int seed = 0)
    {
        return sitecoreHelper.DynamicPlaceholder(placeholderName, chrome.InnerBuilder, count, maxCount, seed);
    }

    public static HtmlString DynamicPlaceholder(this SitecoreHelper sitecoreHelper, string placeholderName,
        Func<DynamicPlaceholderRenderContext, FluentTagBuilder> chromeResolver, int count = 1, int maxCount = 0,
        int seed = 0)
    {
        return sitecoreHelper.DynamicPlaceholder(placeholderName, c => chromeResolver(c).InnerBuilder, count,
            maxCount, seed);
    }
}