Function c2rust_refactor::ast_manip::fn_edit::visit_fns

pub fn visit_fns<T, F>(target: &T, callback: F) where
    T: Visit,
    F: FnMut(FnLike), 

Visit all item-like function definitions, including ItemKind::Fn, ImplItemKind::Method, TraitItemKind::Method, and ForeignItemKind::Fn.