public function get_technical_infos($data = '')
    {
        if (null === $this->technical_data) {
            $sets = $this->app['service.technical_data']->fetchRecordsTechnicalData([$this]);

            $this->setTechnicalDataSet(reset($sets));
        }

        if ($data) {
            if (isset($this->technical_data[$data])) {
                return $this->technical_data[$data];
            } else {
                return false;
            }
        }

        return $this->technical_data;
    }