public void setAction(PdfAction action, float llx, float lly, float urx, float ury) {
((PdfStamperImp) writer)
.addAnnotation(new PdfAnnotation(writer, llx, lly, urx, ury, action), ps.pageN);
}
void addAnnotation(PdfAnnotation annot) {
((PdfStamperImp) writer).addAnnotation(annot, ps.pageN);
}
public void addAnnotation(PdfAnnotation annot, int page) {
stamper.addAnnotation(annot, page);
}