Yes, I thought about that, but if the service is already managed and you want stomp, it is very rare you do not want stomp to be managed, isn't it?

Despite my opinion, I can add it if you think it can add more flexibility. What do you think about using an "auto" value for $stomp_manage and change the condition by this?:

    if any2bool($stomp_manage) or ($stomp_manage == 'auto' and $config_stomp and $service_manage) {