{"ast_node_type":"enum","tokens":[{"end":115,"kind":"keyword","start":0,"text":"let"}]}
            let offset = layout.fields.offset(0).bytes_usize(); // The only field on enum variants is the tag field
            let size = tag.size(target_data_layout).bytes_usize();
            let tag = i128::from_le_bytes(pad16(&b[offset..offset + size], false));