[TFuture](API\Runtime\Core\Async\TFuture)< [FConcertAdmin_GetSessionActivitiesResponse](API\Plugins\Concert\FConcertAdmin_GetSessionActiviti-_1) > GetSessionActivities ( const [FGuid](API\Runtime\Core\Misc\FGuid) & ServerAdminEndpointId, const [FGuid](API\Runtime\Core\Misc\FGuid) & SessionId, int64 FromActivityId, int64 ActivityCount, bool bIncludeDetails ) const