∀ {α : Type w} {m : Type w → Type w'} {β : Type w} [inst : Monad m] [inst_1 : Std.Iterator α m β]
  [inst_2 : Std.Iterators.Finite α m] (it it_1 : Std.IterM.Total m β), it = it_1 → it.toListRev = it_1.toListRev