∀ {α : Type u_1} {β : Type u_2} {Ω : Type u_3} {mα : MeasurableSpace α} {mβ : MeasurableSpace β}
  [inst : MeasurableSpace Ω] [inst_1 : StandardBorelSpace Ω] [inst_2 : Nonempty Ω]
  [inst_3 : MeasurableSpace.CountableOrCountablyGenerated α β] (ρ : MeasureTheory.Measure (β × Ω))
  [inst_4 : MeasureTheory.IsFiniteMeasure ρ] (a : α),
  (fun b => (ProbabilityTheory.Kernel.const α ρ).condKernel (a, b)) =ᵐ[ρ.fst] ⇑ρ.condKernel