∀ {B : Type u_2} [inst : CategoryTheory.Bicategory B] {C : Type u_6} [inst_1 : CategoryTheory.Bicategory C]
  (F : CategoryTheory.OplaxFunctor B C) {a b : B} {f g : a ⟶ b} (η : f ⟶ g),
  CategoryTheory.CategoryStruct.comp
      (CategoryTheory.CategoryStruct.comp (CategoryTheory.Bicategory.leftUnitor (F.map f)).hom
        (CategoryTheory.Bicategory.rightUnitor (F.map f)).inv)
      (CategoryTheory.Bicategory.whiskerRight (F.map₂ η) (CategoryTheory.CategoryStruct.id (F.obj b))) =
    CategoryTheory.CategoryStruct.comp
      (CategoryTheory.Bicategory.whiskerLeft (CategoryTheory.CategoryStruct.id (F.obj a)) (F.map₂ η))
      (CategoryTheory.CategoryStruct.comp (CategoryTheory.Bicategory.leftUnitor (F.map g)).hom
        (CategoryTheory.Bicategory.rightUnitor (F.map g)).inv)