{"ast_node_type":"variable","tokens":[{"end":66,"kind":"keyword","start":0,"text":"let"}]}
            let size = tag.size(target_data_layout).bytes_usize();
        hir_def::layout::Variants::Multiple { tag, tag_encoding, variants, .. } => {
            let offset = layout.fields.offset(0).bytes_usize(); // The only field on enum variants is the tag field