∀ {α : Type u_1} {mα : MeasurableSpace α} {s : Set α} {μ : MeasureTheory.Measure α} {ε' : Type u_7}
  [inst : TopologicalSpace ε'] [inst_1 : ENormedAddMonoid ε'] [TopologicalSpace.PseudoMetrizableSpace ε'] {f : α → ε'},
  MeasureTheory.IntegrableOn f s μ → (∀ x ∉ s, f x = 0) → MeasureTheory.Integrable f μ