∀ {α : Type u_1} {F : Type u_2} {p : ENNReal} [inst : NormedAddCommGroup F] {m m0 : MeasurableSpace α}
  {μ : MeasureTheory.Measure α} (hm : m ≤ m0) (f : ↥(MeasureTheory.Lp F p μ))
  (hf_meas : f ∈ MeasureTheory.lpMeasSubgroup F m p μ), MeasureTheory.MemLp (Exists.choose ⋯) p (μ.trim hm)