{"ast_node_type":"other","tokens":[{"end":98,"kind":"keyword","start":0,"text":"AggregateKind::Tuple"}]}
                    AggregateKind::Tuple | AggregateKind::Closure(..) => (Some(target_idx), None),
                let (variant_target, variant_index) = match **kind {
                    AggregateKind::Adt(def_id, variant_index, ..) => {