{"ast_node_type":"other","tokens":[{"end":45,"kind":"keyword","start":0,"text":"self.label_ribs.push(Rib::new(kind));"}]}
        self.label_ribs.push(Rib::new(kind));
    fn with_label_rib(&mut self, kind: RibKind<'ra>, f: impl FnOnce(&mut Self)) {
        f(self);