liststore get iter of latest element

[Giuseppe Penone <giuspen gmail com>]

Hi,
while it's trivial to get the first element of a list

tree_iter = r_liststore->children().begin();

I still found no way to retrieve the latest element without iterating all over the list.

Getting  r_liststore->children().end() doesn't provide a valid iter.

Does anybody know how to obtain the result more easily?
Thanks and best regards,
Giuseppe.