fact: Definition lunitor_profunctor_square {C₁ C₂ : category} (P : C₁ ↛ C₂) : profunctor_square (functor_identity C₂) (functor_identity C₁) (comp_profunctor (id_profunctor C₁) P) P.
imports: UniMath.Foundations.All UniMath.MoreFoundations.All UniMath.CategoryTheory.Core.Prelude UniMath.CategoryTheory.Categories.HSET.All UniMath.CategoryTheory.Categories.HSET.SetCoends UniMath.CategoryTheory.Profunctors.Core UniMath.CategoryTheory.Profunctors.Examples UniMath.CategoryTheory.Profunctors.Transformation