{"ast_node_type":"other","tokens":[{"end":92,"kind":"keyword","start":0,"text":"bounds.extend(self.region_bound_pairs.iter().filter_map(|&OutlivesPredicate(p,"}]}
        bounds.extend(self.region_bound_pairs.iter().filter_map(|&OutlivesPredicate(p, r)| {
        // this holds from first principles.
            debug!(