IExtensionStateListener

```
public interface IExtensionStateListener
```
Extensions can implement this interface and then call IBurpExtenderCallbacks.registerExtensionStateListener() to register an extension state listener. The listener will be notified of changes to the extension's state. Note: Any extensions that start background threads or open system resources (such as files or database connections) should register a listener and terminate threads / close resources when the extension is unloaded.

All Methods Instance Methods Abstract Methods
Modifier and Type	Method and Description
`void`	`extensionUnloaded()` This method is called when the extension is unloaded.

Interface IExtensionStateListener