```
public interface AsyncCallback
```
Async io completion abstraction used by the native mqtt layer. We moved to using futures directly but that might have been a mistake and we should consider moving back to this for our other async operations that cross the managed/native boundary

All Methods Static Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`void`	`onFailure(Throwable reason)`
`void`	`onSuccess()`
`void`	`onSuccess(Object value)`
`static <T> AsyncCallback`	`wrapFuture(CompletableFuture<T> future, T value)`

static <T> AsyncCallback wrapFuture(CompletableFuture<T> future,
                                    T value)

Interface AsyncCallback