cluster/src/main/scala/org/apache/pekko/cluster/VectorClock.scala
distributed-data/src/main/scala/org/apache/pekko/cluster/ddata/VersionVector.scala

cluster/src/main/scala/org/apache/pekko/cluster/protobuf/ClusterMessageSerializer.scala
distributed-data/src/main/scala/org/apache/pekko/cluster/ddata/protobuf/SerializationSupport.scala

cluster/src/main/protobuf/ClusterMessages.proto
distributed-data/src/main/protobuf/ReplicatedDataMessages.proto

cluster/src/main/protobuf/ClusterMessages.proto
distributed-data/src/main/protobuf/ReplicatorMessages.proto

cluster/src/multi-jvm/scala/org/apache/pekko/cluster/SunnyWeatherSpec.scala
distributed-data/src/multi-jvm/scala/org/apache/pekko/cluster/ddata/ReplicatorChaosSpec.scala