CLI command to help debug the mapping of next-Objectives to the
groups that are created by device drivers.

Change-Id: Iff9e04e5e96b2cabbdb40e83215315d2e27791a6
diff --git a/drivers/default/src/main/java/org/onosproject/driver/pipeline/SpringOpenTTP.java b/drivers/default/src/main/java/org/onosproject/driver/pipeline/SpringOpenTTP.java
index 50b439f..0d54239 100644
--- a/drivers/default/src/main/java/org/onosproject/driver/pipeline/SpringOpenTTP.java
+++ b/drivers/default/src/main/java/org/onosproject/driver/pipeline/SpringOpenTTP.java
@@ -1126,4 +1126,10 @@
         }
 
     }
+
+    @Override
+    public List<String> getNextMappings(NextGroup nextGroup) {
+        // TODO Implementation deferred to vendor
+        return null;
+    }
 }