∀ {α : Type u_2} {β : Type u_3} {m0 : MeasurableSpace α} [inst : MeasurableSpace β] {f : α → β}
  {μ : MeasureTheory.Measure α} [inst_1 : Zero β] {s : Set α},
  MeasurableSet s → (AEMeasurable (s.indicator f) μ ↔ AEMeasurable f (μ.restrict s))