}
KerberosSecurity bst = new KerberosSecurity(DOMUtils.createDocument());
bst.retrieveServiceTicket(getContextName(), callbackHandler, serviceName,
isUsernameServiceNameForm, requestCredentialDelegation,
delegatedCredential);
bst.addWSUNamespace();
bst.setID(wssConfig.getIdAllocator().createSecureId("BST-", bst));
SecurityToken token = new SecurityToken(bst.getID());
token.setToken(bst.getElement());
token.setWsuId(bst.getID());