We certainly can search, but I wouldn’t want us to incorrectly associate a low count with the behavior not being used/warranted. My own personal motivator for this doesn’t use attrs, but does need conversion semantics (we’d probably save a thousand lines of boilerplate code in one library). @NeilGirdhar just shared a similar case of not using attrs.
So I think it’d give us a lower bound, but not an upper one.
That being said 1.5k hits with the converter on the same line (not sure if a hit is a file or a line of code). I’m not sure how to search multiline.