public void setPortNumber(Integer portNumber) {
        this.portNumber = portNumber;
    }
<p>
The port where the MQTT broker operates on the core device. This port is typically 8883, which is the default
port for the MQTT broker component that runs on core devices.
</p>

@param portNumber
       The port where the MQTT broker operates on the core device. This port is typically 8883, which is the
       default port for the MQTT broker component that runs on core devices.
aws-java-sdk-greengrassv2/src/main/java/com/amazonaws/services/greengrassv2/model/ConnectivityInfo.java