∀ {C : Type u₁} {D : Type u₂} [inst : CategoryTheory.Category.{v₁, u₁} C] [inst_1 : CategoryTheory.Category.{v₂, u₂} D]
  [inst_2 : CategoryTheory.Preadditive C] [inst_3 : CategoryTheory.Preadditive D]
  [inst_4 : CategoryTheory.Limits.HasZeroObject C] [inst_5 : CategoryTheory.Limits.HasZeroObject D]
  [inst_6 : CategoryTheory.Limits.HasBinaryBiproducts C] {F G : C ⥤ᵣ D} (α : F ⟶ G),
  ((CategoryTheory.AdditiveFunctor.ofRightExact C D).map α).hom = α.hom