[AngularJS] Restangular and domain model

Does anyone plugin transformers of JSON to get JS domain models in the Restangular flow ? I need to look at code like http://odetocode.com/blogs/scott/archive/2014/03/17/building-better-models-for-angularjs.aspx to first plug a transformer.

But then later my transformers may change. What is the generally accepted procedure to do this ? I would know how to do this using patterns in Java but we are new to JavaScript.