[tests] add missing copyright

Reviewed By: ngorogiannis

Differential Revision: D26608179

fbshipit-source-id: b07d59266

infer/tests/codetoanalyze/java/topl/immutableArray/ManyArrays.java

@@ -1,3 +1,10 @@
+/*
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 import java.util.*;
 
 class ManyArrays {