Accepting Multi<T> as returned type?

[majchrzw]

Hi everyone, I have a use case in my code that uses reactive messaging. In the code I need to fetch multiple items as Multi, handle each one of them (one message contains array of data) and them acknowledge the message. When I set Multi as a type returned from method annotated with @incoming I received an error. My workaround for now is that I do something like:

return Multi.createFrom().iterable(event.records)
      .call(someAction())
      .collect().asList()

but I was wondering if there is any other way to either accept a Multi, or maybe there exist a method like:

return Multi.createFrom().iterable(event.records)
      .call(someAction())
      .onCompletion().continueWithNull()
}

that would just discard all the items from Multi and emit empty event after completing a stream so there is something that can be subscribed after completing all work