fact: Definition indexed_cat_on_mor {C : category} (F : indexed_cat_data C) {x y : C} (f : x --> y) : F x ⟶ F y := pr12 F x y f.
imports: UniMath.MoreFoundations.All UniMath.CategoryTheory.Core.Categories UniMath.CategoryTheory.Core.Isos UniMath.CategoryTheory.Core.Univalence UniMath.CategoryTheory.Core.Functors UniMath.CategoryTheory.Core.NaturalTransformations