r provides a built in instance of RequestContextController that is dependent scoped for the purposes
 of activating and deactivating.  For example:

 <pre>
    &#064;Inject
    private RequestContextController requestContextController;

    public void doRequest(String body) {
       // activate request context
       requestContextController.activate();

       // do work in a request context.

       // deactivate the request context
       requestContextController.deactivate();
    }
 </pre>

 Once the r