TBR: Copyright header added.
MultiPart: 3/5

Change-Id: Ie3d81fbd7e2549cc6dee5a9af4139bab679d4318
diff --git a/go/src/playground/v23_test.go b/go/src/playground/v23_test.go
index 789ef1a..489d5af 100644
--- a/go/src/playground/v23_test.go
+++ b/go/src/playground/v23_test.go
@@ -1,3 +1,6 @@
+// Copyright 2015 The Vanadium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
 // This file was auto-generated via go generate.
 // DO NOT UPDATE MANUALLY
 package playground_test