/**
* @throws \RuntimeException
*/
protected function retry()
{
$retriesLeft = $this->part->getRetries();
if ($retriesLeft < 1) {
throw new \RuntimeException('No more retries left!');
}
$this->part->setRetries(--$retriesLeft);
$this->part->setDatetimeEnded(null);
$this->part->setProcess(null);
$this->repository->savePart($this->part);
}