∀ {C : Type u₁} [inst : CategoryTheory.Category.{v₁, u₁} C] {J : Type u} [inst_1 : CategoryTheory.Category.{v, u} J]
  {T : CategoryTheory.Comonad C} (D : CategoryTheory.Functor J T.Coalgebra)
  (c : CategoryTheory.Limits.Cocone (D.comp T.forget)) (t : CategoryTheory.Limits.IsColimit c),
  (CategoryTheory.Comonad.ForgetCreatesColimits'.coconePoint D c t).a =
    t.desc (CategoryTheory.Comonad.ForgetCreatesColimits'.newCocone D c)