public void testSAML2AttrAssertion() throws Exception {
SAML2CallbackHandler callbackHandler = new SAML2CallbackHandler();
callbackHandler.setStatement(SAML2CallbackHandler.Statement.ATTR);
callbackHandler.setIssuer("www.example.com");
SAMLCallback samlCallback = new SAMLCallback();
SAMLUtil.doSAMLCallback(callbackHandler, samlCallback);
SamlAssertionWrapper samlAssertion = new SamlAssertionWrapper(samlCallback);
WSSecSAMLToken wsSign = new WSSecSAMLToken();
Document doc = SOAPUtil.toSOAPPart(SOAPUtil.SAMPLE_SOAP_MSG);