@dbu as you can see in this method, it is a hard work to get a url from all possibilities of setting a route to the seoMetada. Easiest way is a plain url string, that works good for now. Strategies would answer with a Route or a string, which represents a route name. And in case of an RouteRefferrersInterface the user should be able to take one of all routes (referenced by an uuid). So i will have 

- two strings -> not able to decide if its either a url or a route name
- uuid -> get the route from phpcr
- route from strategy

if i inject the container or that generator i would be able to create a url from Route document and route name. But should i inject an other service ('router')? to do this for me. I would like to return a RedirectResponse.