Is it possible to IS web-service using angularJS in an openCAF project? If yes than how can I call ?

I tried to create a sample MWS portlet application project on mws 9.12. I know how to call/execute a IS webservice using tradition CAF process but as we are introduced with openCAF. Is it possible to call IS webservices using AngularJS from openCAF shell ?
It would be great if anyone can help me with this. I am absolutely new to openCAF.

Have you tried REST called to the services?
It worked for me using AngularJS.