fact: Definition identitynattrans_preservesunit_commutes {C D : category} {IC : C} {ID : D} {F : functor C D} (puF : preserves_unit IC ID F) : preservesunit_commutes puF puF (nat_trans_id F).
imports: UniMath.Foundations.All UniMath.MoreFoundations.All UniMath.CategoryTheory.Core.Categories UniMath.CategoryTheory.Core.Functors UniMath.CategoryTheory.Core.NaturalTransformations UniMath.CategoryTheory.Core.Isos