Added license header for real this time.

Author: svenrog

tests/Geta.Optimizely.GenericLinks.Tests/Services/NullBackingTypeResolver.cs

@@ -1,3 +1,6 @@
+// Copyright (c) Geta Digital. All rights reserved.
+// Licensed under Apache-2.0. See the LICENSE file in the project root for more information
+
 using System;
 using EPiServer.DataAbstraction;