Using "HttpApi" and "HttpApiGroup" for API Nesting and Organization

app version 1:
api (HttpApi)
  - public (HttpApiGroup)
  - private (HttpApiGroup)

app version 2:

api (HttpApi)
   - public (HttpApi)
       - announcements (HttpApiGroup)
       - news (HttpApiGroup)
   - private (HttpApiGroup)


app version 3:

api (HttpApi)
  - public (HttpApi)
      - announcements (HttpApi)
          - site_updates(HttpApiGroup)
          - maintenance_updates(HttpApiGroup)
      - news (HttpApiGroup)
  - private (HttpApiGroup)

if not, how can we organize api gradually as the project grows ?