In 'onException' - how to decide per-message whether to 'continue' route or not

[Martin Lichtin]

One can define a route exception handling to catch and continue:

 rd.onException(Exception.class).continued(true).process(myExceptionHandler)

However, how can one decide on a per-message basis (ie. in myExceptionHandler) 
whether to continue with the route or not?

Thanks
- Martin