How to use x-ray

function () {

  // the url for the page to be scraped
  var url = Settings.url;

  // the array of Event objects to be populated
  var events = [];

  // configuration of the elements to be scraped
  x(url, Settings.selector.container, [{
    artist: Settings.selector.artist,
    venue: Settings.selector.venue,
    date_time: Settings.selector.date_time,
    price: Settings.selector.price
  }])
  // action function
  (function (err, obj) {
    // populate the Events array wit the results
    events = obj;
  })
  return {
    // the public method getEvents returns the array of Events
    getEvents: function () {
      return events;
    }
  }
}()

})
this.x = Xray({
 filters: {
  trim: function (value) {
}).driver(this.nightmareDriver)