public function save()
{
$data = $this->model->getDataForResource();
if (is_array($data) or is_object($data)) {
$data = \Pimcore\Tool\Serialize::serialize($data);
}
$element = ["data" => $data, "documentId" => $this->model->getDocumentId(), "name" => $this->model->getName(), "type" => $this->model->getType()];
$this->db->insertOrUpdate("documents_elements", $element);
}