public void ConnectionAfterClosing(ConnectionId connectionId)
 {
     _first.ConnectionAfterClosing(connectionId);
     _second.ConnectionAfterClosing(connectionId);
 }
 /// <inheritdoc/>
 public void ConnectionAfterClosing(ConnectionAfterClosingEvent @event)
 {
     _first.ConnectionAfterClosing(@event);
     _second.ConnectionAfterClosing(@event);
 }