private Document createPrivateMessageFolderDocument(
List<PrivateMessageFolder> privateMessageFolders) throws Exception {
Document document = DocumentHelper.createDocument();
document.setXMLEncoding("UTF-8");
document.addComment(
"###############################################\n" +
"This File is auto-generated by the Backup Tool \n" +
"you should use the BackupPanel to modify or change this file \n" +
"see http://code.google.com/p/openmeetings/wiki/BackupPanel for Details \n" +
"###############################################");