rootMimeBodyPart.addHeader("Content-Type",
"application/xop+xml; charset=" + charSetEncoding +
"; type=\"" + SOAPContentType + "\"");
rootMimeBodyPart.addHeader("Content-Transfer-Encoding", "binary");
rootMimeBodyPart.addHeader("Content-ID", "<" + contentId + ">");
writeBodyPart(outStream, rootMimeBodyPart, boundary);
Iterator binaryNodeIterator = binaryNodeList.iterator();
while (binaryNodeIterator.hasNext()) {