No request/response information in generated Swagger docs

Hi,

I run the example code from README and checked the generated swagger docs: https://gist.github.com/henadzit/e17328dc9d46d00cca8d0519355203dc

It doesn't contain information about request and response formats which could be extracted from use_kwargs and marshal_with decorators. Is it expected?

Start with the README example and inspect the generated Swagger output linked in the issue. Trace how use_kwargs and marshal_with are handled during documentation generation, then determine whether request and response schemas should appear and what the completed generated documentation should contain.

Written by the indexing model from the issue text.