{"ast_node_type":"variable","tokens":[{"end":72,"kind":"keyword","start":0,"text":"let"}]}
                let fields = variant_data.fields().iter().map(|(x, _)| {
            AdtPatternShape::Tuple { args, ellipsis } => {
                    PlaceElem::Field(Either::Left(FieldId { parent: v, local_id: x }))