Interesting feature Irit, thank you 

Two things:

1. Is there better documentation for that feature than what was in the CL of the issue you linked to? Because that documentation was more lawyery than explanatory.

2. If I understand correctly, the note is meant for things that don't exactly fit in the exception message for some reason or another. (A better documentation with examples would have given me a clearer understanding of your use cases.) I'm not sure why the message included here should be relegated to a note.