public void verify(Component component, JRVerifier verifier) {
   BarcodeComponent barcode = (BarcodeComponent) component;
   BarcodeVerifier barcodeVerifier = new BarcodeVerifier(verifier);
   barcode.receive(barcodeVerifier);
 }
 public void collectExpressions(Component component, JRExpressionCollector collector) {
   BarcodeComponent barcode = (BarcodeComponent) component;
   barcode.receive(new BarcodeExpressionCollector(collector));
 }