{"ast_node_type":"other","tokens":[{"end":46,"kind":"keyword","start":0,"text":"Aggregate(agg_kind,"}]}
            Aggregate(agg_kind, operands) => {
            Discriminant(place) => crate::mir::Rvalue::Discriminant(place.stable(tables, cx)),
                let operands = operands.iter().map(|op| op.stable(tables, cx)).collect();