cluster-sharding/src/main/scala/org/apache/pekko/cluster/sharding/protobuf/ClusterShardingMessageSerializer.scala
cluster/src/main/scala/org/apache/pekko/cluster/protobuf/ClusterMessageSerializer.scala

cluster-sharding/src/main/protobuf/ClusterShardingMessages.proto
cluster/src/main/protobuf/ClusterMessages.proto

cluster-sharding/src/multi-jvm/scala/org/apache/pekko/cluster/sharding/ClusterShardingSpec.scala
cluster/src/multi-jvm/scala/org/apache/pekko/cluster/SurviveNetworkInstabilitySpec.scala

cluster-sharding/src/multi-jvm/scala/org/apache/pekko/cluster/sbr/SplitBrainResolverIntegrationSpec.scala
cluster/src/multi-jvm/scala/org/apache/pekko/cluster/sbr/IndirectlyConnected3NodeSpec.scala

cluster-sharding/src/multi-jvm/scala/org/apache/pekko/cluster/sharding/ClusterShardingSpec.scala
cluster/src/multi-jvm/scala/org/apache/pekko/cluster/LeaderDowningAllOtherNodesSpec.scala

cluster-sharding/src/multi-jvm/scala/org/apache/pekko/cluster/sbr/SplitBrainResolverIntegrationSpec.scala
cluster/src/multi-jvm/scala/org/apache/pekko/cluster/sbr/IndirectlyConnected5NodeSpec.scala

cluster-sharding/src/multi-jvm/scala/org/apache/pekko/cluster/sbr/SplitBrainResolverIntegrationSpec.scala
cluster/src/multi-jvm/scala/org/apache/pekko/cluster/sbr/DownAllIndirectlyConnected5NodeSpec.scala