Message Handler - Does It Take a Message?

The duck typing works as a function. So it works, quacks, smells, and poops like a duck is. If you run with the abstract message handler, that we send the message to the next channel and so on. But if we did that, that means that everything that is a message handler right now in spring location would also be usable from a string cloud function. Well, thankfully it is because we support POGI functions.