diff --git a/core/api/src/test/java/org/onosproject/store/service/CoordinationServiceAdapter.java b/core/api/src/test/java/org/onosproject/store/service/CoordinationServiceAdapter.java
index f05d9aa..68cb5fd 100644
--- a/core/api/src/test/java/org/onosproject/store/service/CoordinationServiceAdapter.java
+++ b/core/api/src/test/java/org/onosproject/store/service/CoordinationServiceAdapter.java
@@ -75,6 +75,11 @@
     }
 
     @Override
+    public <T> TopicBuilder<T> topicBuilder() {
+        return null;
+    }
+
+    @Override
     public TransactionContextBuilder transactionContextBuilder() {
         return null;
     }