∀ {C : Type u} [inst : CategoryTheory.Category.{v, u} C] [CategoryTheory.FinitaryExtensive C]
  {F : CategoryTheory.Functor (CategoryTheory.Discrete CategoryTheory.Limits.WalkingPair) C}
  (c : CategoryTheory.Limits.Cocone F) (hc : CategoryTheory.Limits.IsColimit c), CategoryTheory.IsVanKampenColimit c