-import akka.japi.Procedure;
-import org.opendaylight.controller.cluster.DataPersistenceProvider;
-import org.opendaylight.controller.cluster.raft.behaviors.RaftActorBehavior;
+import java.io.OutputStream;
+import java.util.Optional;
+import org.opendaylight.controller.cluster.raft.base.messages.ApplySnapshot;
+import org.opendaylight.controller.cluster.raft.persisted.Snapshot;