private function logInsert($contenttype, $contentid, $content, $comment = null)
    {
        $this->app['logger.change']->info(
            'Insert record',
            [
                'action'      => 'INSERT',
                'contenttype' => $contenttype,
                'id'          => $contentid,
                'new'         => $content,
                'old'         => null,
                'comment'     => $comment,
            ]
        );
    }