{"ast_node_type":"variable","tokens":[{"end":51,"kind":"keyword","start":0,"text":"let"}]}
                let predicate = replace_opaques_in(
            for (predicate, _) in item_bounds.iter_instantiated_copied(tcx, args) {
                    predicate.to_host_effect_clause(self.tcx, ty::BoundConstness::Maybe),