18 virtual void preFlush() = 0;
20 virtual bool flush() = 0;
22 virtual void postFlush() = 0;
24 virtual uint64 getSubscriberCount()
const;
28 virtual bool isActorSignal()
const;
34 MCFOLD uint64 $getSubscriberCount()
const;
38 MCFOLD
bool $isActorSignal()
const;