Reduce boiler plate code for Messaging about sechub

[de-jcup]

Variant 2

Or we do a spring approach and provide magic method handling for annotations:

e.g.

@IsSendingAsyncMessage(MessageID.REQUEST_SCHEDULER_STATUS_UPDATE)
private DomainMessage sendUpdateSchedulerStatusEvent() {
      return DomainMessageFactory.createEmptyRequest();
}

So there would be a need for a method interceptor which would automatically do the
eventBusService.sendAsynchron(request); for all methods annotated in such way. The result of the method would be used for sending...

Remark: if we implement this, we should think about hiding the event bus service, to avoid any manual calls - also we would get compile errors and see all code which must be changed...
(sounds nice)

[de-jcup]

New (and better way):

@IsSendingAsyncMessage(MessageID.REQUEST_SCHEDULER_STATUS_UPDATE)
private DomainMessage sendUpdateSchedulerStatusEvent() {
      return DomainMessageFactory.createRequest(MessageIdFetcher.fetchFromThisMethod())
}

MessageIdFetcher.fetchFromThisMethod()
will create stacktrace array by Thread, inspect the caller side (as done in #203)
then simply create class by name, fech method, fetch annotation, done...