∀ {J : Type u₁} [inst : CategoryTheory.Category.{v₁, u₁} J] {C : Type u₃} [inst_1 : CategoryTheory.Category.{v₃, u₃} C]
  {F : CategoryTheory.Functor J C} {t : CategoryTheory.Limits.Cone F} (h : CategoryTheory.Limits.IsLimit t) {W : C}
  (m : W ⟶ t.pt),
  m = h.lift { pt := W, π := { app := fun b => CategoryTheory.CategoryStruct.comp m (t.π.app b), naturality := ⋯ } }