code: function XUnitExporter() {
      "use strict";
      this.results = undefined;
      this._xml = utils.node('testsuites');
      this._xml.toString = function toString() {
          return '<?xml version="1.0" encoding="UTF-8"?>' + this.outerHTML; // ouch
      };
  }
docs: JUnit XML (xUnit) exporter for test results.