code: function (browser) {
      // issue the kill command to the browser, when all tests are completed
      this.events.on('tests:complete:sauce:' + this.browserName, browser.kill.bind(browser));
      // clear the webdriver session, when all tests are completed
      this.events.on('tests:complete:sauce:' + this.browserName, this.webdriverClient.closeSession.bind(this.webdriverClient));
      return this;
    }
docs: Binds listeners on browser events
  
  @method _initializeProperties
  @param {object} browser Browser module
  @chainable
  @private