Pimcore\Model\Object\ClassDefinition\Data\Datetime::getDiffDataFromEditmode PHP Метод

    public function getDiffDataFromEditmode($data, $object = null, $params = [])
    {
        $thedata = $data[0]["data"];
        if ($thedata) {
            return $this->getDateFromTimestamp($thedata);
        } else {
            return null;
        }
    }