∀ {R : Type uR} {ι : Type uι} {M₁' : ι → Type v₁'} {M₂ : Type v₂} [inst : Semiring R] [inst_1 : AddCommMonoid M₂]
  [inst_2 : Module R M₂] [inst_3 : (i : ι) → AddCommMonoid (M₁' i)] [inst_4 : (i : ι) → Module R (M₁' i)]
  (g : MultilinearMap R M₁' M₂), (g.compLinearMap fun x => LinearMap.id) = g