Digital visible Sign with pdfbox 1.8.8

I'm using pdfbox 1.8.8 to generate Visible sign on PDF.
Here is my code. I'm not able to get visible Sign in pdf.
All I get is a rectangle box having no content.

PDDocument document = PDDocument.load(temp);
        document.getCurrentAccessPermission().setCanModify(false);
        PDSignature signature = new PDSignature();
        signature.setFilter(PDSignature.FILTER_ADOBE_PPKLITE);
        signature.setSubFilter(PDSignature.SUBFILTER_ADBE_PKCS7_DETACHED);
        signature.setName("XyZ");
        signature.setLocation("XYZ");
        signature.setReason("test");
        signature.setSignDate(Calendar.getInstance());
        
        InputStream image = new FileInputStream("download.png");
        
        PDVisibleSignDesigner signatureDesigner = new PDVisibleSignDesigner(
                document, image, document.getNumberOfPages());
        signatureDesigner.xAxis(0).yAxis(0).zoom(-80).signatureFieldName("signature");

        PDVisibleSigProperties signatureProperties = new PDVisibleSigProperties();
        signatureProperties.signerName("Xyz").signerLocation("Xyz")
                .signatureReason("Test").preferredSize(100).page(1)                    
       .visualSignEnabled(true).setPdVisibleSignature(signatureDesigner).buildSignature();

        SignatureOptions options = new SignatureOptions();
        options.setVisualSignature(signatureProperties);

        document.addSignature(signature, (SignatureInterface) this, options);

        /* Sign */
        document.saveIncremental(tempIn, tempOut);

Actual Result :

Expected Result : I want this block with the Image and signature field content.

The example in 1.8.* supports only JPEG files.

I recommend to use the 2.0.* PDFBox version, there are two examples of digital signing (including one with text), and they are more flexible and offer more features.