This sounds like a misconception. Implementations don't have to declare the exceptions: https://news.ycombinator.com/item?id=23410443 https://news.ycombinator.c

This sounds like a misconception. Implementations don't have to declare the exceptions: https://news.ycombinator.com/item?id=23410443 https://news.ycombinator.com/item?id=23410443.