(mongodb >=1.14.0)
MongoDB\Driver\Monitoring\CommandFailedEvent::getServerConnectionId — Returns the server connection ID for the command
   Returns the server connection ID for the command. The server connection ID is
   distinct from server (i.e.
   MongoDB\Driver\Monitoring\CommandFailedEvent::getServer())
   and is returned in the "connectionId" field of a hello
   command response MongoDB 4.2+.
  
Questa funzione non contiene parametri.
   Returns the server connection ID, or null if it is not available.
  
