store subresponse in abstract response

VectoCore/VectoCore/Models/Connector/Ports/Impl/Response.cs

@@ -41,6 +41,9 @@ namespace TUGraz.VectoCore.Models.Connector.Ports.Impl
 {
 	public abstract class AbstractResponse : IResponse
 	{
+#if DEBUG
+		private IResponse _subresponse;
+#endif
 		public AbstractResponse(object source)
 		{
 			Source = source;
@@ -61,6 +64,9 @@ namespace TUGraz.VectoCore.Models.Connector.Ports.Impl
 
 		public AbstractResponse(object source, IResponse subResponse)
 		{
+#if DEBUG
+			_subresponse = subResponse;
+#endif
 			Source = source;
 			Driver = subResponse.Driver;
 			Engine = subResponse.Engine;