∀ {G : Type u_1} {A : Type u_2} [inst : Group G] [inst_1 : AddCommGroup A] [inst_2 : DistribMulAction G A]
  [inst_3 : TopologicalSpace A] [inst_4 : IsTopologicalAddGroup A] [inst_5 : LocallyCompactSpace A]
  [inst_6 : ContinuousConstSMul G A] [inst_7 : MeasurableSpace A] [inst_8 : BorelSpace A] (μ : MeasureTheory.Measure A)
  [inst_9 : μ.IsAddHaarMeasure] (g : G),
  μ.addHaarScalarFactor ((DomMulAct.mk g)⁻¹ • μ) = (MeasureTheory.distribHaarChar A) g