∀ {J : Type u_2} [inst : CategoryTheory.Category.{u_1, u_2} J] {C : Type u_4}
  [inst_1 : CategoryTheory.Category.{u_3, u_4} C] [inst_2 : CategoryTheory.Limits.HasPullbacks C]
  [CategoryTheory.Limits.HasColimitsOfShape J C] {F : CategoryTheory.Functor J C} {c : CategoryTheory.Limits.Cocone F}
  {X : C} (f : X ⟶ c.pt),
  CategoryTheory.Limits.HasColimit (CategoryTheory.Limits.pullback c.ι ((CategoryTheory.Functor.const J).map f))