Java SDK giving a password Protected File

Hi,

We are using JAVA SDK v11.47 , we are downloading the PDF using the below code that is there on your developer portal. 

Observations:

1.  The files that we download using the below code gives us password prompt when we open it

2. if we use the ?flatten=true then we are getting a corrupted file which doesn't even open 

3. When we use the .net SDK for the same package id and the document id we don't see an issue i.e. the document gets downloaded correctly and we are able to open it without any issues

FileOutputStream stream1 = new FileOutputStream("C:/Users/hhaidary/Desktop/Example/signed_document.pdf");
// Retrieve the bytes of the document (with fields)
byte[] pdfDocumentBytes = eslClient.downloadDocument(packageId, documentId);
        
try{
    stream1.write(pdfDocumentBytes);
} finally {
    stream1.close();
}