def need.flag
import bend-kit-migrate@0.3.0.0/migrate.bend as Migrateimport Base
449def need.flag(m: Maybe<&1, Scalar>, k: Key) -> Result<&1, &1, Error, Bool>:
450 match m:
451 case None{}:
452 Fail{Missing{k}}
453 case Some{SFlag{b}}:
454 Done{b}
455 case Some{s}:
456 Fail{BadField{k}}