- redef meth visit_all(v: Visitor) do end
- redef meth visit_all_reverse(v: Visitor) do end
- redef meth replace_child(old_child: PNode, new_child: PNode) do end
+ redef fun visit_all(v: Visitor) do end
+ redef fun visit_all_reverse(v: Visitor) do end
+ redef fun replace_child(old_child: PNode, new_child: nullable PNode) do end