fact: Definition free_monoid_extend {X : hSet} {Y : monoid} (f : X → Y) : monoidfun (free_monoid X) Y.
imports: UniMath.MoreFoundations.Subtypes UniMath.MoreFoundations.Sets UniMath.Algebra.Monoids UniMath.Algebra.Groups UniMath.Algebra.IteratedBinaryOperations UniMath.Combinatorics.Lists