Actually there is one, the main menu structure is result of this configuration. I think its worth to tell how this menu was builded.
Maybe...
```
Feature: Admin panel main page
  In order to generate admin panel for Symfony2 project
  As a developer
  I need to install FSiAdminBundle and configure few admin elements

  Scenario: Admin panelu menu configuration
    Given the following services were registered
      | Id                                  | Class                                | Tag           | Tag alias |
      | fixtures_bundle.admin.news          | FSi\FixturesBundle\Admin\News        | admin.element |           |
      | fixtures_bundle.admin.home_page     | FSi\FixturesBundle\Admin\HomePage    | admin.element | structure |
      | fixtures_bundle.admin.about_us_page | FSi\FixturesBundle\Admin\AboutUsPage | admin.element | structure |
    And translations are enabled in application
    When I open "Admin panel" page
    Then I should see main menu with following elements 
      | Element name  | Element group  |
      | News          |                |
      | Home page     | Site structure |
      | About us page | Site structure |
```
What do you think about it?