∀ (α : Type u_1) (E : Type u_2) (𝕜 : Type u_3) [inst : NormedAddCommGroup E] {m : MeasurableSpace α}
  (μ : MeasureTheory.Measure α) [inst_1 : NormedRing 𝕜] [inst_2 : Module 𝕜 E] [inst_3 : IsBoundedSMul 𝕜 E]
  [inst_4 : NormedSpace ℝ E] [inst_5 : SMulCommClass ℝ 𝕜 E] (f : ↥(MeasureTheory.Lp.simpleFunc E 1 μ)),
  ‖{ toFun := MeasureTheory.L1.SimpleFunc.integral, map_add' := ⋯, map_smul' := ⋯ } f‖ ≤ 1 * ‖f‖