$Model.declare("MyBusinessModel", {
     traits: [$MNativeObject],

     properties: {
         "id": null,
         "title": null,
         "description": null
     },

     methods: {
         _synchronizeModelFromNativeObject: function() {
             this.id = this.getNativeObject().id;
             this.title = this.getNativeObject().program.title;
         }
     }
});

var bmodel = new $MyBusinessModel({id:"modelId",title:"modelTitle",description:"modelDescription"});
var nativeObject = {id:"nativeId", program:{title:"nativeTitle"}};       // Mock
bmodel.setNativeObject(nativeObject);
bmodel.getNativeObject();                    // {id:"nativeId", program:{title:"nativeTitle"}}
bmodel.getNativeObject(true);                // {id:"modelId", program:{title:"modelTitle"}}
nativeObject.id="nativeId";
nativeObject.program.programTitle = "nativeTitle";
bmodel.setNativeObject(nativeObject, true);  // bmodel => {id:"nativeId",title:"nativeTitle",description:"modelDescription"}