code: function (newStyle) {
              var styleToApply = (newStyle) ? newStyle : ariaUtilsEnvironmentVisualFocus.getAppOutlineStyle();
              this.__style = !ariaCoreBrowser.isIE7 ? styleToApply : null;
              this.__updateVisualFocus();
          }
docs: Changes the outline style. If the newStyle argument is not provided, the appOutlineStyle of the application
  environment is chosen. This method is called after the "environmentChanged" event raised by
  aria.core.environment.Environment
  @param {String} newStyle [optional] outline style that you want to apply