Handle resize on all opened shells

        :param xpixel: unused

        :param ypixel: unused

        """

        if label is None:

            tuns = [(c, st.label) for t, c, ct, st

                    in self.client.tunnels.values() if t == 'shell']

        else:

            ttype, client, ctun, stun = self.client.get_tunnel(label)

            if ttype != 'shell':

                raise ValueError('Label does not refers on a shell')

        client.resize(stun.label, row, col, xpixel, ypixel)

            tuns = [(client, stun.label)]

        for client, label in tuns:

            client.resize(label, row, col, xpixel, ypixel)

    #

    # Port forwarding:

        super(CliClient, self).__init__(*args, **kwargs)

        self._tunnels = {}  # Running tunnels for this client (as client)

    @property

    def tunnels(self):

        """ Get active client tunnels by label (a dict).

        """

        return self._tunnels

    def spawn_job(self, job_class, **kwargs):

        self._server.jobs.spawn(job_class, self.login, **kwargs)