OpenAPI does not scan external libraries?

Question

I am building a microservice with eclipse-microprofile 3 and I am using openapi. Services and XMLRoot classes defined directly in my service are published to openapi (as expected). But my service includes also additional jar files located under /WEB-INF/lib. These jar files are not scanned by open api.

- MyXMLRootClass.java   // scanned
- MyRestSerivce.java    // scanned
- WEB-INF/
  |- my-lib.jar         // ignored

How can I tell OpenAPI to scann also external jar files?

See also my example project setup here