Box\Spout\Common\Helper\FileSystemHelper::__construct PHP Метод

public __construct ( string $baseFolderPath )
$baseFolderPath	string	The path of the base folder where all the I/O can occur

    public function __construct($baseFolderPath)
    {
        $this->baseFolderRealPath = realpath($baseFolderPath);
    }

FileSystemHelper