[EConcertSyncSessionFlags](API\Plugins\ConcertSyncCore\EConcertSyncSessionFlags) & operator&= ( [EConcertSyncSessionFlags](API\Plugins\ConcertSyncCore\EConcertSyncSessionFlags) & Lhs, [EConcertSyncSessionFlags](API\Plugins\ConcertSyncCore\EConcertSyncSessionFlags) Rhs )