parentContextService, defaultExpression);
serviceLocator.registerService(IContextService.class, contextService);
final ICommandService parentCommandService = (ICommandService) serviceLocator
.getService(ICommandService.class);
final ICommandService commandService = new SlaveCommandService(
parentCommandService, IServiceScopes.WINDOW_SCOPE,
this);
serviceLocator.registerService(ICommandService.class, commandService);
final IMenuService menuService = new WindowMenuService(serviceLocator);