{"ast_node_type":"variable","tokens":[{"end":81,"kind":"keyword","start":0,"text":"if"}]}
                            if let Some(ResolvedArg::EarlyBound(region_def_id)) =
                        hir::WherePredicateKind::RegionPredicate(predicate) => {
                                cx.tcx.named_bound_var(predicate.lifetime.hir_id)