∀ {C : Type u} [inst : CategoryTheory.Category.{v, u} C] {X Y : C} (f : X ⟶ Y)
  [inst_1 : CategoryTheory.Limits.HasImage f],
  CategoryTheory.Limits.imageSubobjectIso f = CategoryTheory.Subobject.underlyingIso (CategoryTheory.Limits.image.ι f)