∀ {C : Type u} [inst : CategoryTheory.Category.{v, u} C] {D : Type u_1} [inst_1 : CategoryTheory.Category.{v_1, u_1} D]
  (F : CategoryTheory.Functor (CategoryTheory.WithInitial C) D) (X : C),
  (CategoryTheory.WithInitial.equivComma.functor.obj F).right.obj X = F.obj (CategoryTheory.WithInitial.incl.obj X)