I have used Connexion (https://github.com/zalando/connexion https://github.com/zalando/connexion) in the past. The only thing I didn't really like is that the O

I have used Connexion (https://github.com/zalando/connexion https://github.com/zalando/connexion) in the past. The only thing I didn't really like is that the OpenAPI file grows rather unmaintainable after some time if you have a big service.