{C : Type uC} →
  [inst : CategoryTheory.Category.{uC', uC} C] →
    [inst_1 : CategoryTheory.Limits.HasZeroMorphisms C] →
      {W X Y Z : C} →
        [inst_2 : CategoryTheory.Limits.HasBinaryBiproduct W X] →
          [inst_3 : CategoryTheory.Limits.HasBinaryBiproduct Y Z] → (W ≅ Y) → (X ≅ Z) → (W ⊞ X ≅ Y ⊞ Z)