+void MetadataObjObserverInterface::on_metadata_object_created(MetadataObject* obj)
+{
+ (void)obj;
+}
+
+void MetadataObjObserverInterface::on_metadata_object_deleted(MetadataObject* obj)
+{
+ (void)obj;
+}
+
+void MetadataObjObserverInterface::on_metadata_object_changed(MetadataObject* obj,
+ MetadataValueType value_type)
+{
+ (void)obj;
+ (void)value_type;
+}
+
+