MaintenanceEventListener is currently internal, so applications cannot observe maintenance
events (MOVING/MIGRATING/etc.) even though MaintenanceNotificationsConfig accepts a listener.
Promote it to supported public API with @since, and clean up the internal listener wiring
(registration/visibility) as part of the same change.
MaintenanceEventListeneris currently internal, so applications cannot observe maintenanceevents (MOVING/MIGRATING/etc.) even though
MaintenanceNotificationsConfigaccepts a listener.Promote it to supported public API with
@since, and clean up the internal listener wiring(registration/visibility) as part of the same change.