code: func GetUnscaledBarcodeDimensions(pdf barcodePdf, code string) (w, h float64) {
  	barcodes.Lock()
  	unscaled, ok := barcodes.cache[code]
  	barcodes.Unlock()
  
  	if !ok {
  		err := errors.New("Barcode not found")
  		pdf.SetError(err)
  		return
  	}
  
  	return convertFrom96Dpi(pdf, float64(unscaled.Bounds().Dx())),
  		convertFrom96Dpi(pdf, float64(unscaled.Bounds().Dy()))
  }
docs: // GetUnscaledBarcodeDimensions returns the width and height of the
  // unscaled barcode associated with the given code.