∀ {𝓕 : Type u_11} {R : outParam (Type u_12)} {R₂ : outParam (Type u_13)} [inst : Semiring R] [inst_1 : Semiring R₂]
  {σ₁₂ : outParam (R →+* R₂)} {σ₂₁ : outParam (R₂ →+* R)} [inst_2 : RingHomInvPair σ₁₂ σ₂₁]
  [inst_3 : RingHomInvPair σ₂₁ σ₁₂] {E : outParam (Type u_14)} {E₂ : outParam (Type u_15)}
  [inst_4 : SeminormedAddCommGroup E] [inst_5 : SeminormedAddCommGroup E₂] [inst_6 : Module R E] [inst_7 : Module R₂ E₂]
  [inst_8 : EquivLike 𝓕 E E₂] [toSemilinearEquivClass : SemilinearEquivClass 𝓕 σ₁₂ E E₂],
  (∀ (f : 𝓕) (x : E), ‖f x‖ = ‖x‖) → SemilinearIsometryEquivClass 𝓕 σ₁₂ E E₂