Function c2rust_refactor::path_edit::fold_resolved_paths

pub fn fold_resolved_paths<T, F>(target: &mut T, cx: &RefactorCtxt, callback: F) where
    T: MutVisit,
    F: FnMut(Option<QSelf>, Path, &Def) -> (Option<QSelf>, Path), 

Rewrite paths, with access to their resolved Defs in the callback.