{C : Type u} →
  [inst : CategoryTheory.Category.{v, u} C] →
    {J : CategoryTheory.Limits.MulticospanShape} →
      {I : CategoryTheory.Limits.MulticospanIndex J C} →
        (t : CategoryTheory.Limits.Multifork I) → t ≅ CategoryTheory.Limits.Multifork.ofι I t.pt t.ι ⋯