Jakarta REST 3.1 now has support for this (https://github.com/jakartaee/rest/issues/418). We need to make sure our OpenAPI document generator can handle this media type correctly.
code -> OpenAPI document: The SmallRye OpenAPI implementation does the annotation scanning to derive the OpenAPI document from an application. I have filed this SmallRye issue requesting that enhancement: https://github.com/smallrye/smallrye-open-api/issues/1571
OpenAPI document -> code: Our OpenAPITools generator(s) will need to be enhanced to generate code using the new multipart form data annotation.
Jakarta REST 3.1 now has support for this (https://github.com/jakartaee/rest/issues/418). We need to make sure our OpenAPI document generator can handle this media type correctly.