Add java.io.Serial to EmptyState

Annotate members related to serialization.

Change-Id: I46b486244cd4f34dbae47c459c353411eccdf675
Signed-off-by: Robert Varga <robert.varga@pantheon.tech>

diff --git a/opendaylight/md-sal/sal-akka-raft/src/main/java/org/opendaylight/controller/cluster/raft/persisted/EmptyState.java b/opendaylight/md-sal/sal-akka-raft/src/main/java/org/opendaylight/controller/cluster/raft/persisted/EmptyState.java
index aee90ace41e9907d2823ac842ebc96cea8e77b30..9939e2f2b09b3201159a7cd4ada8fd7a4d990789 100644 (file)
--- a/opendaylight/md-sal/sal-akka-raft/src/main/java/org/opendaylight/controller/cluster/raft/persisted/EmptyState.java
+++ b/opendaylight/md-sal/sal-akka-raft/src/main/java/org/opendaylight/controller/cluster/raft/persisted/EmptyState.java
@@ -13,13 +13,16 @@ package org.opendaylight.controller.cluster.raft.persisted;
  * @author Thomas Pantelis
  */
 public final class EmptyState implements Snapshot.State {
+    @java.io.Serial
     private static final long serialVersionUID = 1L;
 
     public static final EmptyState INSTANCE = new EmptyState();
 
     private EmptyState() {
+        // Hidden on purpose
     }
 
+    @java.io.Serial
     @SuppressWarnings("static-method")
     private Object readResolve() {
         return INSTANCE;