--- /dev/null
+/*\r
+ * Copyright (c) 2014 Pantheon Technologies s.r.o. and others. All rights reserved.\r
+ *\r
+ * This program and the accompanying materials are made available under the\r
+ * terms of the Eclipse Public License v1.0 which accompanies this distribution,\r
+ * and is available at http://www.eclipse.org/legal/epl-v10.html\r
+ */\r
+\r
+package org.opendaylight.openflowjava.protocol.api.keys.experimenter;\r
+\r
+/**\r
+ * Marker interface - marks keys appropriate for experimenter serializer registration\r
+ * @author michal.polkorab\r
+ */\r
+public interface ExperimenterSerializerKey {\r
+ // only empty marker interface - to ease extensions registration\r
+}\r