observedGroupIdsProvider

Allows to asynchronously provide lens group IDs to present lenses in carousel. By default, the observedGroupIdsProvider is backed by a Callable which returns the observedGroupIds set as is, however, if custom observedGroupIdsProvider is supplied, then its results are merged with the observedGroupIds to a final set of lens groups that appear in the carousel. Any Exception thrown in the provided observedGroupIdsProvider is suppressed resulting in only the observedGroupIds used as the final set of group IDs that appear in the carousel.