How to use VisitMutAstPath with Program.fold_with() ?

[GeeekyBoy]

I'm trying to access parent from child node like I do in babel's (path.parent).
One way I think I can follow to implement a similar functionality is to implement VisitMutAstPath instead of VisitMut. The problem here is that Program.fold_with() doesn't accept VisitMutAstPath.
Is there any code samples that shows how VisitMutAstPath can be used ?

[kdy1]

IIRC there's visit_mut_with_ast_path. You can use cargo doc, too.