fact: Definition id2_rwhisker {a b c : C} (f : C⟦a, b⟧) (g : C⟦b, c⟧) : id2 f ▹ g = id2 _ := pr1 (pr2 (pr2 (pr2 (pr2 (pr2 C))))) _ _ _ f g.
imports: UniMath.Foundations.All UniMath.MoreFoundations.All UniMath.CategoryTheory.Core.Categories UniMath.CategoryTheory.Core.Univalence