Prototyping dangers

gistfile1.js

(function (app) {
    app.ProductSearchCollection = window.IQBackbone.ODataCollection.extend(
        {
            model: app.ProductSearchModel,

            urlRoot:
                function () { return Constants.SERVER_ROOT + '/odata/model/Products/Search'; },

            urlParameters: ['$expand=Product'],
            
            addSearchTerm:
                function (term) {
                    if (term && term != '')
                        this.addUrlParameter("terms=" + term);
                }
        });
})(window.CuratorApp);