def b64.mdisc
import bend-osdev-cipher-core@0.1.0.0/PROOF.bend as PROOFimport Base
import bend-osdev-cipher-core@0.1.0.0/cipher_core.bend as L
120def b64.mdisc(m: Maybe<&2, L.LcBlock64>) -> Type:
121 match m:
122 case Some{b}:
123 Empty
124 case None{}:
125 Unit