* window.
*/
private final void initializeDefaultServices() {
serviceLocator.registerService(IWorkbenchWindow.class, this);
final Expression defaultExpression = new WorkbenchWindowExpression(this);
final IHandlerService parentHandlerService = (IHandlerService) serviceLocator
.getService(IHandlerService.class);
final IHandlerService handlerService = new SlaveHandlerService(
parentHandlerService, defaultExpression);