protected function insertLevel($level, $title = '', $parent_id = 0, $config = null)
{
$id = $this->findEntityIdByTitle($title, $level);
if ($id) {
return $id;
}
$entity = new VF_Level($level);
if (!is_null($config)) {
$entity->setConfig($config);
}
$entity->setTitle($title);
$id = $entity->save($parent_id);
return $id;
}