diff --git a/tests/MyGame/MonsterExtra.py b/tests/MyGame/MonsterExtra.py
index f7288b6..b30ee6e 100644
--- a/tests/MyGame/MonsterExtra.py
+++ b/tests/MyGame/MonsterExtra.py
@@ -207,6 +207,11 @@
         return cls.InitFromObj(monsterExtra)
 
     @classmethod
+    def InitFromPackedBuf(cls, buf, pos=0):
+        n = flatbuffers.encode.Get(flatbuffers.packer.uoffset, buf, pos)
+        return cls.InitFromBuf(buf, pos+n)
+
+    @classmethod
     def InitFromObj(cls, monsterExtra):
         x = MonsterExtraT()
         x._UnPack(monsterExtra)