/** Number of indirect objects in the document */
 @Override
 public Long getnrIndirects() {
   return Long.valueOf(((COSDocument) baseObject).getObjects().size());
 }
 public PBCosDocument(PDDocument pdDocument, long length) {
   super(pdDocument.getDocument());
   setType("CosDocument");
   this.pdDocument = pdDocument;
   sizeOfDocument = Long.valueOf(length);
 }