∀ {α : Type u_6} {β : Type u_7} [inst : MeasurableSpace α] [inst_1 : MeasurableSpace β] [inst_2 : SizeOf α]
  [inst_3 : SizeOf β] (toEquiv : α ≃ β)
  (measurable_toFun : autoParam (Measurable ⇑toEquiv) MeasurableEquiv.measurable_toFun._autoParam)
  (measurable_invFun : autoParam (Measurable ⇑toEquiv.symm) MeasurableEquiv.measurable_invFun._autoParam),
  sizeOf { toEquiv := toEquiv, measurable_toFun := measurable_toFun, measurable_invFun := measurable_invFun } =
    1 + sizeOf toEquiv