Why addressing module could not be engaged at service level?

[shivendra tripathi]

Hi,

Just wanted to know, if there is any specific reason behind "addressing
module could only be engaged at global level", while other module e.g.
rampart could be enabled at service level?

Why similar check is not present in addressing out handler which could be
seen in rampartSender?

if (!msgContext.isEngaged(WSSHandlerConstants.SECURITY_MODULE_NAME)) {
          return InvocationResponse.CONTINUE;
        }

Appreciate any pointer.

Thanks,
Shiv