@ProviderType
public interface RetryHandler
The retry handler should be informed by external services
 whenever something in the system changed which might make
 it worth to retry a failed installed.
 The installer retries all unprocessed resources whenever this
 retry handler is notified to reschedule. For example a bundle
 listener listening for updates/installs/removals of bundles
 can inform the retry handler.
- Since:
- 1.2