Not Found append in Client Api

[HoJin]

Hi..
I Use Telerik Extensions for Asp.NET MVC Componet.(2011.3.1115)
My Application is Asp.Net MVC3 Webform, .net Framework 4.0

I Read Document(Client API and Events) http://www.telerik.com/help/aspnet-mvc/telerik-ui-components-treeview-client-api-and-events.html

I will try to add a node to the treeview.
I've written code.

var treeview = $('#ProductsTreeView').data('tTreeView');
treeview.append({ Text: "bar" }, treeview.findByText("foo"));

My Applicaion an error occurs.

My Applicaion an error occurs. append API can not be found.

Why not found append API?
insertAfter, insertBefore can not find.

I saw telerik.treeview.min.js file but does not exist.

thank you.

[Roatin Marth]

append was introduced in the 2012 Q1 release (2 days ago).

[HoJin]

Thank you! Roantin Marth. Very helpful to me.