'get  updated command'

def get_update_cmd(self):

    if self.conf_exist:
        return
    if (self.state == 'absent'):
        self.updates_cmd.append(('undo    ip    binding    vpn-instance    %s' % self.vrf))
        return
    if (self.vrf != self.intf_info['vrfName']):
        self.updates_cmd.append(('ip    binding    vpn-instance    %s' % self.vrf))
    return
