{A : Type u₁} →
  {B : Type u₂} →
    {C : Type u₃} →
      [inst : CategoryTheory.Category.{v₁, u₁} A] →
        [inst_1 : CategoryTheory.Category.{v₂, u₂} B] →
          [inst_2 : CategoryTheory.Category.{v₃, u₃} C] →
            (X : Type u₄) →
              [inst_3 : CategoryTheory.Category.{v₄, u₄} X] →
                (F : CategoryTheory.Functor A B) →
                  (G : CategoryTheory.Functor C B) →
                    (CategoryTheory.Limits.CategoricalPullback.CatCommSqOver.transform X).obj
                        (CategoryTheory.Limits.CatCospanTransform.id F G) ≅
                      CategoryTheory.Functor.id (CategoryTheory.Limits.CategoricalPullback.CatCommSqOver F G X)