def parse_m2
import bend-collections-laws-crypto@1.0.0.0/src/crypto/argon2/phc.bend as Phcimport Base
364def parse_m2(+m: Nat, r: Maybe<&2, String>) -> Maybe<&2, Phc>:
365 match r:
366 case None{}:
367 None{}
368 case Some{rest}:
369 parse_t(m, read(rest))