∀ {ι : Sort u_1} {α : Type u_2} {β : Type u_3} [inst : MeasurableSpace α] [inst_1 : MeasurableSpace β] {f : ι → α → β}
  {μ : MeasureTheory.Measure α} (hf : ∀ (i : ι), AEMeasurable (f i) μ) (p : α → (ι → β) → Prop) (i : ι) (x : α),
  aeSeq hf p i x = if x ∈ aeSeqSet hf p then AEMeasurable.mk (f i) ⋯ x else ⋯.some