Because of I needed the patch more urgent I actually thought by myself, I have already uploaded a new version including test cases.
I found a bug by the way, that breaks the ability to derive from a not abstract model, but I have fixed it. If you are already using the previous version of my patch, you should update now. I think the patch is ready to get merged into trunk now, but I can not decide this. What does the maintainers think? Regards Sebastian Noack
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