∀ {C₁ : Type u₁} {C₂ : Type u₂} [inst : CategoryTheory.Category.{v₁, u₁} C₁]
  [inst_1 : CategoryTheory.Category.{v₂, u₂} C₂] {W₁ : CategoryTheory.MorphismProperty C₁}
  {W₂ : CategoryTheory.MorphismProperty C₂} [inst_2 : SizeOf C₁] [inst_3 : SizeOf C₂]
  [inst_4 : ⦃X Y : C₁⦄ → (x : X ⟶ Y) → SizeOf (W₁ x)] [inst_5 : ⦃X Y : C₂⦄ → (x : X ⟶ Y) → SizeOf (W₂ x)]
  (functor : CategoryTheory.Functor C₁ C₂) (map : W₁ ≤ W₂.inverseImage functor),
  sizeOf { functor := functor, map := map } = 1 + sizeOf functor