∀ {α : Type u} {β : α → Type v} (cmp : autoParam (α → α → Ordering) Std.DTreeMap.Raw.toList_rcc._auto_1)
  [Std.TransCmp cmp] {t : Std.DTreeMap.Raw α β cmp},
  t.WF →
    ∀ {lowerBound upperBound : α},
      Std.Slice.toList (Std.Rcc.Sliceable.mkSlice t lowerBound...=upperBound) =
        List.filter (fun e => decide ((cmp e.fst lowerBound).isGE = true ∧ (cmp e.fst upperBound).isLE = true)) t.toList