Yields the :class`~androguard.decompiler.dad.node.Node`s of the graph in post-order i.e we visit all the
        children of a node before visiting the node itself.

def post_order(self):
        """
        Yields the :class`~androguard.decompiler.dad.node.Node`s of the graph in post-order i.e we visit all the
        children of a node before visiting the node itself.
        """
        def _visit(n, cnt):
            visited.add(n)
            for suc in self.all_sucs(n):
                if suc not in visited:
                    for cnt, s in _visit(suc, cnt):
                        yield cnt, s
            n.po = cnt
            yield cnt + 1, n

        visited = set()
        for _, node in _visit(self.entry, 1):
            yield node