∀ {B : Type u_2} [inst : CategoryTheory.Bicategory B] {C : Type u_6} [inst_1 : CategoryTheory.Bicategory C]
  (F : CategoryTheory.Pseudofunctor B C) {a b c : B} {f f' : a ⟶ b} (η : f ⟶ f') (g : b ⟶ c),
  CategoryTheory.CategoryStruct.comp (F.map₂ (CategoryTheory.Bicategory.whiskerRight η g)) (F.mapComp f' g).hom =
    CategoryTheory.CategoryStruct.comp (F.mapComp f g).hom (CategoryTheory.Bicategory.whiskerRight (F.map₂ η) (F.map g))