{"ast_node_type":"other","tokens":[{"end":38,"kind":"keyword","start":0,"text":"variant:"}]}
        variant: &'tcx ty::VariantDef,
        remaining_fields: UnordMap<Ident, (FieldIdx, &ty::FieldDef)>,
        hir_fields: &'tcx [hir::ExprField<'tcx>],