attachments.addPart(att);
String contentType = getContentType(object, context);
if (contentType != null)
{
MessageWriter mt = writer.getAttributeWriter(XML_MIME_TYPE);
mt.writeValue(contentType);
}
MessageWriter include = writer.getElementWriter(XOP_INCLUDE);
MessageWriter href = include.getAttributeWriter(XOP_HREF);
href.writeValue("cid:" + id);
include.close();
}