I think the feature to define mappings like
```
/pa
 |__ ge/about
```
is really obscure — first I don't see use cases for it and second consider mappings like
```
/auth
 |_ /login
/authorities
 |_ /:name
```
then for the request `GET /authorities/somename` even subcontroller for `/auth` will be executed — not handlers but `before` and `after` filters which is really unnecessary and can be confusing and hard to debug especially depending on code inside filters.