How to add a JSON object / model into your whitestorm world / scene?

I am loading the object from my json file.

var loader = new THREE.ObjectLoader(); loader.load("blue-car.json", function ( car ) { car.position.set(2, 0, 0); car.addTo(world); } ); 

How can I add the object to my world? In regular three.js it works when I load the json file, but how do I do it in whitestorm?

Update: I tried using the importScene whitestorm method. No errors but it still doesn't show up. Here is an image of logging out a regular plane in whitestorm and the car that is loaded from the json file.

Thank You!