def header.marker
import mylsm-lsm-store@0.6.0.1/src/transfer/Restore.bend as Restoreimport Base
import bend-kit-bytes@0.3.2.0/bytes.bend as Bytes
169def header.marker(pair: Bytes.Bytes & Bytes.Bytes) -> Result<&1, &1, Error, Header>:
170 match pair:
171 case (input, marker):
172 header.magic.checked(input, equal(Bytes.eq(marker, magic.header())))