if (annotation instanceof PDAnnotationLink) {
PDAnnotationLink annotationlink = (PDAnnotationLink) annotation;
if (annotationlink.getAction() != null) {
PDAction action = annotationlink.getAction();
if (action instanceof PDActionURI) {
PDActionURI uri = (PDActionURI) action;
String link = uri.getURI();
if (link != null) {
handler.startElement("div", "class", "annotation");
handler.startElement("a", "href", link);
handler.endElement("a");
handler.endElement("div");