Multi Level Expand in UI5

Experts ,

I am using a multi level expand with below service and trying to bind each entity set to icon tab bar in my view.

can any one suggest how to achieve this ?

Expand from exployees to

http://services.odata.org/V2/Northwind/Northwind.svc/Employees?$expand=Orders,Territories

My Code :

http://plnkr.co/edit/4N1ARIqUsffUaL9mt0SJ?p=preview

Thanks in advance

David