def bits.bytes.fin
import bend-kit-regex@0.8.0.0/regex.bend as Regeximport Base
import bend-kit-bytes@0.3.3.0/bytes.bend as Bytes
2321def bits.bytes.fin(+len: U32, r: Array<U32> & Bool) -> Bytes.Bytes & Maybe<&2, Bool>:
2322 (a, x) = r
2323 (Bytes.Bytes{len, a}, Some{x})