public static function run($dataDir = null)
{
# Create instance of BarCodeBuilder, specify codetext and symbology in the constructor
$symbology = new Symbology();
$builder = new BarCodeBuilder("\$ 123:50", $symbology->Codabar);
# Set the codabar start symbol to A
$codabarSymbol = new CodabarSymbol();
$builder->setCodabarStartSymbol($codabarSymbol->A);
# Set the codabar stop symbol to D
$builder->setCodabarStopSymbol($codabarSymbol->D);
# Save the image to disk in PNG format
$builder->save($dataDir . "barcode.out.png");
# Print message
print "Barcode image generated successfully." . PHP_EOL;
}