public static function run($dataDir = null)
{
# Instantiate barcode object
$symbology = new Symbology();
$bb = new BarCodeBuilder("12345678", $symbology->Code128);
# sets the top margin
$bb->getMargins()->setTop(4);
# sets the bottom margin
$bb->getMargins()->setBottom(5);
# sets the left margin
$bb->getMargins()->setLeft(2);
# sets the right margin
$bb->getMargins()->setRight(3);
$bb->save($dataDir . "SetBarcodeImageMargins.jpg");
# Display Status.
print "Set Barcode Image Margins, please check the output file." . PHP_EOL;
}