diff --git a/core/store/dist/src/main/java/org/onlab/onos/store/cluster/messaging/ClusterMessageHandler.java b/core/store/dist/src/main/java/org/onlab/onos/store/cluster/messaging/ClusterMessageHandler.java
index 15e756d..7ec27ec 100644
--- a/core/store/dist/src/main/java/org/onlab/onos/store/cluster/messaging/ClusterMessageHandler.java
+++ b/core/store/dist/src/main/java/org/onlab/onos/store/cluster/messaging/ClusterMessageHandler.java
@@ -1,5 +1,13 @@
 package org.onlab.onos.store.cluster.messaging;
 
+/**
+ * Interface for handling cluster messages.
+ */
 public interface ClusterMessageHandler {
+
+    /**
+     * Handles/Processes the cluster message.
+     * @param message cluster message.
+     */
     public void handle(ClusterMessage message);
 }
\ No newline at end of file