Add 'Data' to response which can be used during transforming the response (#893)

* Add 'Data' to response which can be used during transforming the response

* md

* hb

* fix

* Linq

* fix test

* v4

* 14

* .

* x

* remove

* s

test/WireMock.Net.Tests/Serialization/MappingConverterTests.ToCSharpCode.cs

@@ -119,7 +119,25 @@ public partial class MappingConverterTests
             .WithDelay(12345)
             .WithTransformer();
 
-        return new Mapping(guid, _updatedAt, string.Empty, string.Empty, null, _settings, request, response, 42, null, null, null, null, null, false, null);
+        return new Mapping(
+            guid,
+            _updatedAt,
+            string.Empty,
+            string.Empty,
+            null,
+            _settings,
+            request,
+            response,
+            42,
+            null,
+            null,
+            null,
+            null,
+            null,
+            false,
+            null,
+            data: null
+        );
     }
 }
 #endif