∀ {C : Type u_4} [inst : CategoryTheory.Category.{u_2, u_4} C] {D : Type u_6}
  [inst_1 : CategoryTheory.Category.{u_5, u_6} D] {E : Type u_3} [inst_2 : CategoryTheory.Category.{u_1, u_3} E]
  (e : C ≌ D) {X Y : CategoryTheory.Functor E C} (f : X ⟶ Y),
  CategoryTheory.CategoryStruct.comp ((CategoryTheory.Functor.id (CategoryTheory.Functor E C)).map f)
      ((fun F => F.rightUnitor.symm ≪≫ F.isoWhiskerLeft e.unitIso ≪≫ F.associator e.functor e.inverse) Y).hom =
    CategoryTheory.CategoryStruct.comp
      ((fun F => F.rightUnitor.symm ≪≫ F.isoWhiskerLeft e.unitIso ≪≫ F.associator e.functor e.inverse) X).hom
      ((((CategoryTheory.Functor.whiskeringRight E C D).obj e.functor).comp
            ((CategoryTheory.Functor.whiskeringRight E D C).obj e.inverse)).map
        f)