{"ast_node_type":"variable","tokens":[{"end":80,"kind":"keyword","start":0,"text":"let"}]}
            let adt = self.typeck_results().expr_ty(expr).ty_adt_def().unwrap();
            let res = self.typeck_results().qpath_res(qpath, expr.hir_id);
            let variant = adt.variant_of_res(res);