PulsarTemplate generic

[jonas-grgt]

Often you want to use PulsarTemplate to publish different kind of messages, for that reason one autowires it as PulsarTemplate<?> else you cannot use it to publish a UserMessage and a ClientMessage at the same time. So what is the point of having a wildcard as generic?

So my question is, do we really need to top-level generic? If not I would love to investigate how to get rid of it.