cosmetics

Change-Id: If8dca73b034839f593e2b0ba0863c5ab26077ebd
diff --git a/core/store/dist/src/main/java/org/onlab/onos/store/cluster/messaging/AntiEntropyReply.java b/core/store/dist/src/main/java/org/onlab/onos/store/cluster/messaging/AntiEntropyReply.java
index 7a52e09..94c20ea 100644
--- a/core/store/dist/src/main/java/org/onlab/onos/store/cluster/messaging/AntiEntropyReply.java
+++ b/core/store/dist/src/main/java/org/onlab/onos/store/cluster/messaging/AntiEntropyReply.java
@@ -11,6 +11,13 @@
 import com.google.common.collect.ImmutableMap;
 import com.google.common.collect.ImmutableSet;
 
+/**
+ * Anti-Entropy reply message.
+ * <p>
+ * Message to send in reply to advertisement or another reply.
+ * Suggest to the sender about the more up-to-date data this node has,
+ * and request for more recent data that the receiver has.
+ */
 public class AntiEntropyReply<ID, VALUE> extends ClusterMessage {
 
     private final NodeId sender;