fact: Definition ds_in (x:DirectSum) := pr122 x.
imports: UniMath.Foundations.All UniMath.MoreFoundations.All UniMath.CategoryTheory.Core.Categories UniMath.CategoryTheory.Core.Isos UniMath.CategoryTheory.Core.Functors UniMath.CategoryTheory.Core.NaturalTransformations UniMath.CategoryTheory.Core.Univalence UniMath.Foundations.Sets UniMath.Combinatorics.FiniteSets UniMath.CategoryTheory.RepresentableFunctors.Representation UniMath.CategoryTheory.RepresentableFunctors.Precategories