bool EnumerateActivityIdsWithEventTypesAndFlagsInRange ( const int64 InFirstActivityId, const int64 InMaxNumActivities, [TFunctionRef](API\Runtime\Core\GenericPlatform\TFunctionRef)< bool(int64, [EConcertSyncActivityEventType](API\Plugins\ConcertSyncCore\EConcertSyncActivityEventType), [EConcertSyncActivityFlags](API\Plugins\ConcertSyncCore\EConcertSyncActivityFlags))> InCallback ) const