Migrating IPolicyList t IPolicySet

tests/TestSupport/MockBuilderContext.cs

@@ -95,6 +95,8 @@ namespace Unity.Interception.Tests.TestSupport
 
         public BuilderStrategy[] BuildChain => throw new NotImplementedException();
 
+        public IPolicySet Registration => throw new NotImplementedException();
+
         public void AddResolverOverrides(IEnumerable<ResolverOverride> newOverrides)
         {
             resolverOverrides.AddRange(newOverrides);