∀ {α₁ : Type u_3} {β₁ : Type u_4} {α₂ : Type u_1} {β₂ : Type u_2} [inst : MeasurableSpace β₁]
  [inst_1 : MeasurableSpace β₂] (hα : α₁ ≃ α₂) (hβ : β₁ ≃ᵐ β₂) (x : Set (α₁ → β₁)),
  MeasurableSet x → MeasurableSet (⇑(hα.arrowCongr' ↑hβ).symm ⁻¹' x)