code: function (displayName) {
  
              Layer.call(this, this.displayName);
  
              this.displayName = displayName || "Open Street Map";
  
              this.layer = null;
  
              this.xhr = null;
  
              // TODO: Picking is enabled as a temporary measure for screen credit hyperlinks to work (see Layer.render)
              this.pickEnabled = true;
          }
docs: Constructs an Open Street Map layer.
  @alias OpenStreetMapImageLayer
  @constructor
  @augments WmtsLayer
  @classdesc Provides a layer that shows Open Street Map imagery.
  
  @param {String} displayName This layer's display name. "Open Street Map" if this parameter is
  null or undefined.