{"ast_node_type":"variable","tokens":[{"end":32,"kind":"keyword","start":0,"text":"let"}]}
        let late_bound_in_term =
            tcx.collect_constrained_late_bound_regions(pred.map_bound(|pred| pred.projection_term));
            tcx.collect_referenced_late_bound_regions(pred.map_bound(|pred| pred.term));