Loader\Csv::__construct PHP 메소드

    public function __construct()
    {
        if (file_exists('nodes.csv') && static::$file_saved == 0) {
            unlink('nodes.csv');
        }
        if (file_exists('rels.csv') && static::$file_saved == 0) {
            unlink('rels.csv');
        }
    }