Oh yeah no, the issue was not with the API, it’s just that I got to the first example, figured “seems easy enough” making a bunch of assumption I did not validate in any way in the process, then when that didn’t work rather than check I was using the API correctly I made a bunch more assumptions (completely nonsensical too) of where the error might be. When I finally got to reading the docstring for `find_iter` the error was obvious and it took seconds to get the correct result again.