∀ {α : Type u_1} {β : Type u_2} {γ : Type u_3} {mα : MeasurableSpace α} {mβ : MeasurableSpace β}
  {mγ : MeasurableSpace γ} [inst : MeasurableSpace.CountablyGenerated γ] (κ : ProbabilityTheory.Kernel α (γ × β))
  (ν : ProbabilityTheory.Kernel α γ) (n : ℕ) (x : γ) {s : Set β},
  MeasurableSet s → Measurable fun a => κ.densityProcess ν n a x s