def obs_limit
import bend-collections@1.0.0.0/src/containers/bitlist.bend as Bitlistimport Base
import bend-collections@1.0.0.0/src/containers/types/bitlist.bend as E
292def obs_limit(r: Bitlist & Maybe<&2, Nat>) -> Bitlist & E.Obs:
293 (s, x) = r
294 (s, E.OLimit{x})