{C : Type u} →
  [inst : CategoryTheory.Category.{v, u} C] →
    {D : Type u₂} →
      [inst_1 : CategoryTheory.Category.{v₂, u₂} D] → CategoryTheory.Functor C D → {X Y : C} → (X ⟶ Y) → (X ⟶ Y) → Prop