public Integer getPortNumber() {
        return this.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>

@return 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