public static function run($dataDir = null)
 {
     # Instantiate barcode object
     $builder = new BarCodeBuilder();
     $symbology = new Symbology();
     $builder->setSymbologyType($symbology->Pdf417);
     # Width of each module
     $builder->setxDimension(0.6);
     # Height of each module
     $builder->setyDimension(1.2);
     $builder->setCodeText("this is some test code text. \n Second line \n third line.");
     # Save the image to your system and set its image format to Jpeg
     $builder->save($dataDir . "Creating2DBarcode.jpg");
     # Display Status
     print "Created 2D Barcode Successfully." . PHP_EOL;
 }