{"ast_node_type":"variable","tokens":[{"end":97,"kind":"keyword","start":0,"text":"let"}]}
        let parent = self.create_def(constant.id, None, DefKind::AnonConst, constant.value.span);
    fn visit_anon_const(&mut self, constant: &'a AnonConst) {
        self.with_parent(parent, |this| visit::walk_anon_const(this, constant));