∀ {C : Type u} [inst : CategoryTheory.Category.{v, u} C] [inst_1 : CategoryTheory.Limits.HasProducts C] (α : Type tᵒᵖ),
  CategoryTheory.Limits.FormalCoproduct.powerBifunctor.obj α =
    CategoryTheory.Limits.FormalCoproduct.powerFunctor (Opposite.unop α)