∀ {C : Type u_2} [inst : CategoryTheory.Category.{u_1, u_2} C] {Y Z : C} (i : Y ≅ Z),
  CategoryTheory.CategoryStruct.comp { hom := i.hom, w := ⋯ } { hom := i.inv, w := ⋯ } =
    CategoryTheory.CategoryStruct.id (CategoryTheory.Limits.asEmptyCone Y)