in durable-state/src/main/scala/org/apache/pekko/projection/state/scaladsl/DurableStateSourceProvider.scala [68:74]
override def extractOffset(stateChange: DurableStateChange[A]): Offset = stateChange.offset
override def extractCreationTime(stateChange: DurableStateChange[A]): Long =
stateChange match {
case u: UpdatedDurableState[_] => u.timestamp
case _ => 0L // FIXME handle DeletedDurableState when that is added
}