For C# a note should be added to the description that the Kata is expecting an exception to be thrown for negative values, not returning null.

I found this quite fun, just wanted to say thank you for making it.

I had never dealt with reflection before, and beyond being aware of the term I had no idea what it actually was.

It took me far too long to figure out how to return ALL of the methods and I learned way more because of it, good call on that one.

Depth

I have been trying to figure out how to mark the issue as resolved, it seems I need to reply again in order to do so.