https://pekko.apache.org/japi/pekko/1.1/org/apache/pekko/cluster/singleton/ClusterSingletonManager.Internal$.OldestChangedBuffer.InitialOldestState$.html
ClusterSingletonManager.Internal$.OldestChangedBuffer.InitialOldestState$
internal
https://pekko.apache.org/japi/pekko/1.1/org/apache/pekko/cluster/singleton/ClusterSingletonManager.Internal$.OldestChangedBuffer.InitialOldestState.html
ClusterSingletonManager.Internal$.OldestChangedBuffer.InitialOldestState
internal