I'm trying to get a reference to the kendo multiselect widget that I've created using the AngularJS kendo-multiselect directive. In following the example here (http://docs.telerik.com/kendo-ui/AngularJS/introduction#widget-references), I've tried to add a kendo-widget-name attribute to my element, but it doesn't seem to do anything. In fact, the docs make mention of 'kendo-widget-name', but none of the examples actually use it. I scanned the source code, and I can find no reference to that attribute or a directive with that name. What am I missing?