∀ {α : Type u} {β : Type v} (cmp : autoParam (α → α → Ordering) Std.TreeMap.toList_rcc._auto_1) [Std.TransCmp cmp]
  {t : Std.TreeMap α β cmp} {lowerBound upperBound : α},
  Std.Slice.toList (Std.Rcc.Sliceable.mkSlice t lowerBound...=upperBound) =
    List.filter (fun e => decide ((cmp e.1 lowerBound).isGE = true ∧ (cmp e.1 upperBound).isLE = true)) t.toList