Kendo UI TreeView - Expand all nodes

Expand all the nodes in a Kendo UI TreeView

HTML

<link rel="stylesheet" href="http://cdn.kendostatic.com/2012.2.710/styles/kendo.common.min.css">
<link rel="stylesheet" href="http://cdn.kendostatic.com/2012.2.710/styles/kendo.default.min.css">
<script src="http://cdn.kendostatic.com/2012.2.710/js/kendo.all.min.js"></script>
<div id="treeview"></div>

JavaScript

var ds = new kendo.data.HierarchicalDataSource({
    data: [
        {
        text: "Furniture",
        items: [
            {
            text: "Tables & Chairs"},
        {
            text: "Sofas"},
        {
            text: "Occasional Furniture"}
        ]},
    {
        text: "Decor",
        items: [
            {
            text: "Bed Linen"},
        {
            text: "Curtains & Blinds"},
        {
            text: "Carpets"}
        ]}
    ]
});

var treeview = $("#treeview").kendoTreeView({
    dataSource: ds,
    loadOnDemand: false
}).data("kendoTreeView");

treeview.expand(".k-item");