Added OFBufferId class to represent OF buffer ids
diff --git a/test_data/of13/flow_delete_strict.data b/test_data/of13/flow_delete_strict.data
index 6165405..845b2da 100644
--- a/test_data/of13/flow_delete_strict.data
+++ b/test_data/of13/flow_delete_strict.data
@@ -80,7 +80,7 @@
     .setIdleTimeout(5)
     .setHardTimeout(10)
     .setPriority(6000)
-    .setBufferId(50)
+    .setBufferId(OFBufferId.of(50))
     .setOutPort(OFPort.of(6))
     .setOutGroup(8)
     .setFlags(ImmutableSet.<OFFlowModFlags>of())