text: //= require geoblacklight/viewers/esri
  
  GeoBlacklight.Viewer.ImageMapLayer = GeoBlacklight.Viewer.Esri.extend({
    layerInfo: {},
  
    getPreviewLayer: function() {
  
      // set layer url
      this.options.url = this.data.url;
  
      // return image service layer
      return L.esri.imageMapLayer(this.options);
    }
  });
  