```
public interface ContactCompletionHandler
```
Defines an interface that the client application needs to implement to receive the result of an operation requested on various contact related methods.

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`void`	`onError(ContactException error)`	Reports that the operation has failed.
`void`	`onSuccess()`	Reports that the operation was successfully completed.

Interface ContactCompletionHandler