public function add_dependency(backup_setting $dependentsetting, $type = setting_dependency::DISABLED_VALUE, $options = array())
{
// Check the dependency level is >= current level
if ($dependentsetting->get_level() < $this->level) {
throw new backup_setting_exception('cannot_add_upper_level_dependency');
}
parent::add_dependency($dependentsetting, $type, $options);
}
