∀ {ι : Type u_1} {ι' : Type u_2} {c : ComplexShape ι} {c' : ComplexShape ι'} {C : Type u_3}
  [inst : CategoryTheory.Category.{v_1, u_3} C] [inst_1 : CategoryTheory.Limits.HasZeroMorphisms C]
  (K : HomologicalComplex C c') {L : HomologicalComplex C c'} (M : HomologicalComplex C c') (φ : K ⟶ L) (φ' : L ⟶ M)
  (e : c.Embedding c') [inst_2 : e.IsRelIff] {Z : HomologicalComplex C c} (h : M.restriction e ⟶ Z),
  CategoryTheory.CategoryStruct.comp (HomologicalComplex.restrictionMap (CategoryTheory.CategoryStruct.comp φ φ') e) h =
    CategoryTheory.CategoryStruct.comp (HomologicalComplex.restrictionMap φ e)
      (CategoryTheory.CategoryStruct.comp (HomologicalComplex.restrictionMap φ' e) h)