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