def nr.rec
import cswap-bend-cli@0.1.0.0/policy/bar.bend as Barimport Base
117def nr.rec(+rec: Bool, +f: Nat, +hb: Maybe<&2, Nat>, +ah: Maybe<&2, Nat>, +thr: Nat) -> Maybe<&2, Nat>:
118 match rec:
119 case False{}:
120 Some{f}
121 case True{}:
122 nr.rel(nr.release(hb, ah, thr), f)