@ninfaj unfortunately not. Traversing is only possible with a path, not with an url. 
Using the navigation_root_url would result in:
```
    raise e
   - __traceback_info__: (['@@images', 'subsite', 'plone', 'nohost', ''], 'http:')
KeyError: 'http:'
```


btw. I need to assign self.navigation_root_url, because it's used in the `logo.pt`