def Record.check.if
import bend-kit-migrate@0.3.0.0/migrate.bend as Migrateimport Base
621def Record.check.if(m: Maybe<&2, Key>, r: Record) -> Result<&1, &1, Error, Record>:
622 match m:
623 case None{}:
624 Done{r}
625 case Some{k}:
626 Fail{Invalid{k}}