Some(Series { name: "b", index: Index { labels: [Int64(0), Int64(1)], name: None, duplicate_cache: OnceLock(false), sort_order_cache: OnceLock(AscendingInt64), semantic_fingerprint_cache: OnceLock(<uninit>) }, column: Column { dtype: Int64, values: [Int64(10), Int64(20)], validity: ValidityMask { words: [], len: 2 } }, categorical: None, sparse: None })