SystemPropertiesListener

Functional Interface:

This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.
```
@FunctionalInterface
public interface SystemPropertiesListener
```
Provides a listener that can react to SystemPropertyRecord changes. Use this and register it in the SystemPropertiesManager instead of adding a record listener to SystemPropertiesRecord directly.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`void`	`onSystemPropertiesChanged(SystemPropertiesManager.PropertyMap gatewayProps)`	Override to implement the listener.

- Method Detail
  - onSystemPropertiesChanged
```
void onSystemPropertiesChanged(SystemPropertiesManager.PropertyMap gatewayProps)
```
    Override to implement the listener. All updated system properties will be present in the read-only map. Just retrieve the property that you are interested in (see GatewaySystemProperties for all properties).