∀ (G : Type u_1) {α : Type u_3} [inst : AddGroup G] [inst_1 : AddAction G α] (s : Set α) [Countable G]
  [inst_3 : MeasurableSpace α] [MeasurableConstVAdd G α] {μ : MeasureTheory.Measure α}
  [MeasureTheory.VAddInvariantMeasure G α μ],
  MeasureTheory.NullMeasurableSet s μ → MeasureTheory.NullMeasurableSet (MeasureTheory.addFundamentalInterior G s) μ