Callback 15.2.0 API

```
public interface FeatureManager.Callback

                    
```
Callback for fetching feature status. Method FeatureManager.checkFeature} will call GateKeeper manager to load the latest GKs first and then run the callback function.

Method Summary

Modifier and Type	Method	Description
`abstract Unit`	`onCompleted(Boolean enabled)`	The method that will be called when the feature status request completes.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Method Detail
  - onCompleted
```
 abstract Unit onCompleted(Boolean enabled)
```
    The method that will be called when the feature status request completes.