code: function(url, src) {
  		if (src) {
  			this._setupsrc(src);
  		}
  		if (url) {
  			this.element.src = url;
  		}
  		return this.contentLocation.href;
  	}
docs: Experimentally load some kind of blob.
  @param @optional {URL} url
  @param @optional {String} src