code: func BarcodeUnscalable(pdf barcodePdf, code string, x, y float64, w, h *float64, flow bool) {
  	printBarcode(pdf, code, x, y, w, h, flow)
  }
docs: // BarcodeUnscalable puts a registered barcode in the current page.
  //
  // Its arguments work in the same way as that of Barcode(). However, it allows for an unscaled
  // barcode in the width and/or height dimensions. This can be useful if you want to prevent
  // side effects of upscaling.