diff --git a/py_gen/templates/common.py b/py_gen/templates/common.py
index 5245a26..75c6f4c 100644
--- a/py_gen/templates/common.py
+++ b/py_gen/templates/common.py
@@ -64,6 +64,10 @@
             return None
     return [x for x in loxi.generic_util.unpack_list_tlv16(reader, deserializer) if x != None]
 
+def unpack_list_oxm(buf):
+    # TODO
+    return []
+
 :: for ofclass in ofclasses:
 :: include('_ofclass.py', ofclass=ofclass, superclass="object")