PDPageContentStream pdPageContentStream3 = new PDPageContentStream(srcDoc, pdPage, true, false);
pdPageContentStream3.setNonStrokingColor(Color.yellow);
pdPageContentStream3.fillRect(100, 400, 300, 100);
pdPageContentStream3.close();
srcDoc.save(TESTDIR + CLONESRC);
PDFMergerUtility merger = new PDFMergerUtility();
PDDocument dstDoc = new PDDocument();
// this calls PDFCloneUtility.cloneForNewDocument(),
// which would fail before the fix in PDFBOX-2052