Facile\DoctrineMySQLComeBack\Doctrine\DBAL\Connection::beginTransaction PHP Метод

    public function beginTransaction()
    {
        if (0 !== $this->getTransactionNestingLevel()) {
            return parent::beginTransaction();
        }
        $attempt = 0;
        $retry = true;
        while ($retry) {
            $retry = false;
            try {
                parent::beginTransaction();
            } catch (\Exception $e) {
                if ($this->canTryAgain($attempt, true) && $this->_driver->isGoneAwayException($e)) {
                    $this->close();
                    if (0 < $this->getTransactionNestingLevel()) {
                        $this->resetTransactionNestingLevel();
                    }
                    ++$attempt;
                    $retry = true;
                } else {
                    throw $e;
                }
            }
        }
    }