--- /dev/null
+package org.opendaylight.vpnservice.test;
+
+import java.util.Collection;
+
+import org.opendaylight.controller.md.sal.binding.api.DataObjectModification;
+import org.opendaylight.controller.md.sal.binding.api.DataTreeChangeListener;
+import org.opendaylight.controller.md.sal.binding.api.DataTreeModification;
+import org.opendaylight.yangtools.yang.binding.DataObject;
+import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
+
+import com.google.common.base.Preconditions;
+
+public abstract class AbstractMockFibManager<D extends DataObject> implements DataTreeChangeListener<D> {
+
+ public AbstractMockFibManager() {
+ // Do Nothing
+ }
+
+
+ public void onDataTreeChanged(Collection<DataTreeModification<D>> changes) {
+ // TODO Auto-generated method stub
+ }
+
+}