{"ast_node_type":"variable","tokens":[{"end":100,"kind":"keyword","start":0,"text":"let"}]}
                            let lt_name = get_new_lifetime_name(self.tcx, poly_trait_ref, generics);
                        | hir::ItemKind::Union(_, generics, _) => {
                            let (lt_sp, sugg) = match generics.params {