syntax_data: {"ast_node_type":"other","tokens":[{"end":51,"kind":"keyword","start":0,"text":"walk_visitable_list!(visitor,"}]}
source_snippet:         walk_visitable_list!(visitor, self.iter());
context_before:     fn visit_with<V: TypeVisitor<I>>(&self, visitor: &mut V) -> V::Result {
context_after:         V::Result::output()