∀ {G : Type u_1} [inst : Group G] [inst_1 : TopologicalSpace G] [inst_2 : IsTopologicalGroup G]
  (K₀ : TopologicalSpace.PositiveCompacts G) (V : TopologicalSpace.OpenNhdsOf 1),
  MeasureTheory.Measure.haar.chaar K₀ ∈ MeasureTheory.Measure.haar.clPrehaar (↑K₀) V