∀ {α : Type u_1} {β : Type u_2} {mα : MeasurableSpace α} {mβ : MeasurableSpace β} {μ : MeasureTheory.Measure α}
  {κ : ProbabilityTheory.Kernel α β} [Countable α] [MeasurableSingletonClass α],
  ∀ᵐ (ω : α) ∂μ, (κ ω).AbsolutelyContinuous (μ.bind ⇑κ)