docs: public void setSessionBackupAsync( final boolean sessionBackupAsync ) {
          final boolean oldSessionBackupAsync = _sessionBackupAsync;
          _sessionBackupAsync = sessionBackupAsync;
          if ( ( oldSessionBackupAsync != sessionBackupAsync ) && _manager.isInitialized() ) {
              _log.info( "SessionBackupAsync was changed to " + sessionBackupAsync + ", creating new BackupSessionService with new configuration." );
              _backupSessionService = new BackupSessionService( _transcoderService, _sessionBackupAsync, _sessionBackupTimeout,
                      _backupThreadCount, _storage, _memcachedNodesManager, _statistics );
          }
      }