New (Swagger based) REST documentation is missing request bodies

Issue Summary

This is reproducible on Data Center: n/a (but yes

Steps to Reproduce

1. Go to https://developer.atlassian.com/server/bitbucket/rest/api-group-projects/#api-projects-post
2. Observe that there is no request body present

Expected Results

A request body with examples is present to help callers understand and use the resource

Actual Results

No request body is present. This renders the documentation very incomplete and not serving its purpose.

Workaround

For resources that existed before 8.0 was released, use the old documentation located at: https://docs.atlassian.com/bitbucket-server/rest/7.21.0/bitbucket-rest.html#idp149
For new resources there is currently no workaround

Reported on: https://community.developer.atlassian.com/t/bitbucket-server-rest-api-documentation-generated-is-very-incomplete/59439