How to enable/execute Scala/Java-based migrations using this framework?

Hi,

I would like to know wow to enable/execute Scala/Java-based migrations using this framework? I tried to add java based evolution to `db/migration/default` directory basing on https://flywaydb.org/documentation/tutorials/java tutorial, but they are not being executed as SQL migrations. So how I can do that?

Best regards,
Wiktor