fix: Added code example

reproduces #259  before the bugfix

src/dscom.demo/assembly5/ExplodeyBaseClass.cs

@@ -4,4 +4,8 @@ namespace dSPACE.Runtime.InteropServices.DemoAssembly5;
 
 public class ExplodeyBaseClass : UserControl
 {
+    private class PrivateImplementationDetails
+    {
+        // required to reproduce #259
+    }
 }