def put.keys.retained
import mylsm-lsm-store@0.6.0.1/src/ByteDurableDb.bend as ByteDurableDbimport Base
import bend-kit-bytes@0.3.2.0/bytes.bend as Bytes
1913def put.keys.retained(
1914 probe_key: Bytes.Bytes,
1915 pair: Bytes.Bytes & Bytes.Bytes
1916) -> Bytes.Bytes & Bytes.Bytes & Bytes.Bytes:
1917 match pair:
1918 case (read_key, write_key): (probe_key, read_key, write_key)