{"ast_node_type":"other","tokens":[{"end":97,"kind":"keyword","start":0,"text":"self.with_label_rib(RibKind::FnOrCoroutine,"}]}
                self.with_label_rib(RibKind::FnOrCoroutine, |this| visit::walk_expr(this, expr));
            ExprKind::Gen(..) => {
            }