{"ast_node_type":"variable","tokens":[{"end":67,"kind":"keyword","start":0,"text":"if"}]}
            if let ty::Ref(_, base_ty_inner, _) = *base_ty.kind() {
            let base_ty = self.typeck_results.expr_ty_adjusted(base);
                let index_ty = self.typeck_results.expr_ty_adjusted(index);