{B : Type u₁} →
  [inst : CategoryTheory.Bicategory B] →
    {C : Type u₂} →
      [inst_1 : CategoryTheory.Bicategory C] →
        {F G : CategoryTheory.Pseudofunctor B C} →
          {η θ : F ⟶ G} →
            (CategoryTheory.Pseudofunctor.StrongTrans.toOplax η).Modification
                (CategoryTheory.Pseudofunctor.StrongTrans.toOplax θ) →
              CategoryTheory.Pseudofunctor.StrongTrans.Modification η θ