fact: Definition Kleisli_to_μ {C : category} (T: KleisliMonad C) : Kleisli_to_functor T ∙ Kleisli_to_functor T ⟹ Kleisli_to_functor T.
imports: UniMath.Foundations.PartD UniMath.MoreFoundations.Tactics UniMath.CategoryTheory.Core.Categories UniMath.CategoryTheory.Core.Functors UniMath.CategoryTheory.Core.NaturalTransformations UniMath.CategoryTheory.Monads.KTriples UniMath.CategoryTheory.Monads.Monads UniMath.CategoryTheory.Monads.RelativeMonads