∀ {B : Type u₁} {inst : CategoryTheory.Bicategory B} {C : Type u₂} {inst_1 : CategoryTheory.Bicategory C}
  {F G : CategoryTheory.LaxFunctor B C} {η θ : F ⟶ G} {app : (a : B) → η.app a ⟶ θ.app a}
  {naturality :
    autoParam
      (∀ {a b : B} (f : a ⟶ b),
        CategoryTheory.CategoryStruct.comp (CategoryTheory.Bicategory.whiskerLeft (F.map f) (app b)) (θ.naturality f) =
          CategoryTheory.CategoryStruct.comp (η.naturality f)
            (CategoryTheory.Bicategory.whiskerRight (app a) (G.map f)))
      CategoryTheory.Lax.OplaxTrans.Modification.naturality._autoParam}
  {app_1 : (a : B) → η.app a ⟶ θ.app a}
  {naturality_1 :
    autoParam
      (∀ {a b : B} (f : a ⟶ b),
        CategoryTheory.CategoryStruct.comp (CategoryTheory.Bicategory.whiskerLeft (F.map f) (app_1 b))
            (θ.naturality f) =
          CategoryTheory.CategoryStruct.comp (η.naturality f)
            (CategoryTheory.Bicategory.whiskerRight (app_1 a) (G.map f)))
      CategoryTheory.Lax.OplaxTrans.Modification.naturality._autoParam},
  { app := app, naturality := naturality } = { app := app_1, naturality := naturality_1 } → app = app_1