{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) →
          [inst_2 : CategoryTheory.HasShift C ℤ] →
            [inst_3 : CategoryTheory.Preadditive C] →
              [inst_4 : CategoryTheory.Limits.HasZeroObject C] →
                [inst_5 : ∀ (n : ℤ), (CategoryTheory.shiftFunctor C n).Additive] →
                  [CategoryTheory.Pretriangulated C] →
                    [inst_7 : CategoryTheory.HasShift D ℤ] →
                      [L.CommShift ℤ] → Set (CategoryTheory.Pretriangulated.Triangle D)