{"ast_node_type":"other","tokens":[{"end":67,"kind":"keyword","start":0,"text":"self.with_label_rib(RibKind::Constant,"}]}
                    self.with_label_rib(RibKind::Constant, |this| {
                Some(ast::BlockModifier::Const(_)) => {
                        this.with_awaitable_block(Awaitable::No("constant block"), |this| {