/**
* Create XML Document
*/
public Document createDocument() throws Exception {
DOMUtil du = new DOMUtil();
Document iml = du.create("<?xml version=\"1.0\"?><identity id=\"" + username + "\"></identity>");
du.setAttributeValue(iml, "/identity/password/@type", "md5");
du.setElementValue(iml, "/identity/password", encryptedPassword);
du.setElementValue(iml, "/identity/comment", comment);
for (int i = 0; i < groupnames.size(); i++) {
du.addElement(iml, "/identity/groups/group", (String) groupnames.elementAt(i));