[SDFAB-359] Purge all objective for a given application ID

Change-Id: I51847b0be890deacec5caddc18d52bcd2993959a
(cherry picked from commit 607fd0b70e4553226d0937d36de9cde655f2eb62)
diff --git a/core/api/src/test/java/org/onosproject/net/flowobjective/FlowObjectiveServiceAdapter.java b/core/api/src/test/java/org/onosproject/net/flowobjective/FlowObjectiveServiceAdapter.java
index 0b17ce8..66ff125 100644
--- a/core/api/src/test/java/org/onosproject/net/flowobjective/FlowObjectiveServiceAdapter.java
+++ b/core/api/src/test/java/org/onosproject/net/flowobjective/FlowObjectiveServiceAdapter.java
@@ -18,6 +18,7 @@
 
 import com.google.common.collect.ImmutableList;
 import com.google.common.collect.ImmutableMap;
+import org.onosproject.core.ApplicationId;
 import org.onosproject.net.DeviceId;
 import org.apache.commons.lang3.tuple.Pair;
 import java.util.Map;
@@ -70,6 +71,11 @@
     }
 
     @Override
+    public void purgeAll(DeviceId deviceId, ApplicationId appId) {
+
+    }
+
+    @Override
     public Map<Pair<Integer, DeviceId>, List<String>> getNextMappingsChain() {
         return ImmutableMap.of();
     }