∀ (C : Type u) {A : Type u_1} [inst : CategoryTheory.Category.{v, u} C] [inst_1 : AddGroup A]
  [inst_2 : CategoryTheory.HasShift C A] (i j : A) (h : i + j = 0),
  (CategoryTheory.shiftEquiv' C i j h).counitIso = CategoryTheory.shiftFunctorCompIsoId C j i ⋯