ArticleList::__construct PHP Method

    public function __construct($randomId = false)
    {
        parent::__construct();
        $translator = \Zend_Registry::get('container')->getService('translator');
        // generate id - unique per page instance
        if (empty(self::$lastId)) {
            self::$lastId = __FILE__;
            if ($randomId) {
                self::$lastId = uniqid();
            }
        }
        $this->id = substr(sha1(self::$lastId), -6);
        self::$lastId = $this->id;
        // column titles
        $this->cols = array('Number' => null, 'Language' => $translator->trans('Language'), 'Order' => $translator->trans('Order'), 'Name' => $translator->trans('Title', array(), 'api'), 'Section' => $translator->trans('Section'), 'Webcode' => $translator->trans('Webcode', array(), 'library'), 'Type' => $translator->trans('Type'), 'Created' => $translator->trans('Created by'), 'Author' => $translator->trans('Author'), 'Status' => $translator->trans('Status'), 'OnFrontPage' => $translator->trans('On Front Page'), 'OnSectionPage' => $translator->trans('On Section Page'), 'Images' => $translator->trans('Images'), 'Topics' => $translator->trans('Topics'), 'Comments' => $translator->trans('Comments'), 'Reads' => $translator->trans('Reads'), 'UseMap' => $translator->trans('Use Map', array(), 'library'), 'Locations' => $translator->trans('Locations', array(), 'library'), 'CreateDate' => $translator->trans('Create Date', array(), 'library'), 'PublishDate' => $translator->trans('Publish Date', array(), 'library'), 'LastModified' => $translator->trans('Last Modified', array(), 'articles'), 'Preview' => $translator->trans('Preview'), 'Translate' => $translator->trans('Translate'));
    }

 /**
  * InvoiceRow constructor.
  *
  * @param string $articleId
  * @param string $description
  * @param int    $quantity
  * @param float  $unitPrice
  * @param float  $vat
  */
 public function __construct($articleId, $description, $quantity, $unitPrice, $vat)
 {
     parent::__construct($articleId, $description, $quantity);
     $this->UnitPrice = $unitPrice;
     $this->VAT = $vat;
 }