Rich 'schema' support for query params and other fields?

I'm curious about how to put some important information about param/field constraints/format according to the Open API 3.0 spec: https://swagger.io/specification/#schema-object. Especially, constraints info is quite important.

Could you please point me to something if it is already supported?

Currently, I can only see the next information for the 'schema':

```
schema:
type: string
```

As far as I understand Spring REST Docs supports flexible 'attributes' approach that can be then integrated with custom templates for snippets while this is not the use case for Open API 3.0 generation. Does it worth some automated integration on your side and somehow automatically transform Bean Validation constraints into Open API Spec?

Thanks in advance.