/**
* {@inheritDoc}
*/
protected byte[] getPdfContent() throws GraphicException {
final ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
final GraphicOutput graphicOutput = this.graphic.getGraphicOutput(
Mime.PDF.getMimeString());
if (! (graphicOutput instanceof GraphicPdf)) {
throw new GraphicException("Unable to get PDF output helper for "
+ this.graphic.getUrl());
}