∀ {C : Type u_1} {D : Type u_2} [inst : CategoryTheory.Category.{v_1, u_1} C]
  [inst_1 : CategoryTheory.Category.{v_2, u_2} D] (L : CategoryTheory.Functor C D) {H : Type u_3}
  [inst_2 : CategoryTheory.Category.{v_3, u_3} H] (G : CategoryTheory.Functor C H)
  [inst_3 : L.HasPointwiseLeftKanExtension G] [inst_4 : CategoryTheory.Limits.HasColimitsOfShape D H]
  [inst_5 : CategoryTheory.Limits.HasColimitsOfShape C H]
  (X : CategoryTheory.Grothendieck (CategoryTheory.CostructuredArrow.functor L)),
  CategoryTheory.CategoryStruct.comp
      (CategoryTheory.Limits.colimit.ι ((CategoryTheory.CostructuredArrow.grothendieckProj L).comp G) X)
      (L.colimitIsoColimitGrothendieck G).inv =
    CategoryTheory.Limits.colimit.ι G ((CategoryTheory.CostructuredArrow.proj L X.base).obj X.fiber)