20 virtual void preFlush() = 0;
23 virtual bool flush() = 0;
26 virtual void postFlush() = 0;
29 virtual uint64 getSubscriberCount()
const;
35 virtual bool isActorSignal()
const;
41 MCFOLD uint64 $getSubscriberCount()
const;
45 MCFOLD
bool $isActorSignal()
const;