Append unobtrusive ajax url generator (attribute data-ajax-url)

Sometimes required to perform ajax queries to a different url address. It requires tag attribute "data-ajax-url".
I changed the helper methods for this feature (leaving backward compatibility):

Using helper method in view:
@Html.PagedListPager(
&nbsp;&nbsp;&nbsp;&nbsp;Model, 
&nbsp;&nbsp;&nbsp;&nbsp;page => Url.Action("Index", new { page, size = Model.PageSize }), 
&nbsp;&nbsp;&nbsp;&nbsp;page => Url.Action("Items", new { page, size = Model.PageSize }), // Unobtrusive ajax url generator
&nbsp;&nbsp;&nbsp;&nbsp;PagedListRenderOptions.EnableUnobtrusiveAjaxReplacing("containerId")
);

Result markup:
&lt;a href=&quot;/users/page-2&quot; data-ajax-url=&quot;/users/items?page=2&amp;size=25&quot; data-ajax-...&gt;2&lt;/a&gt;