WebSockerPingInterval

[chaweewatp]

How can I check weather client send ping to server?

[JPFarber55]

I do now know Ping OCPP-RPC Message from Client(ChargePoint) to Server, I Only know Heartbeat OCPP Message, And this is how can I handle it:
```
// create a specific handler for Heartbeat requests
client.handle('Heartbeat', (ocppMessage: OCPPMessage) => {
this.logger.log(Web Socket Server got Heartbeat from ${client.identity});

    // respond with the Web Socket Server's current time.
    return {
      currentTime: new Date().toISOString(),
    };
  });