try {
serviceContext.put(Service.queryAuthUser, "user");
serviceContext.put(Service.queryAuthPwd, "password");
UpdateRequest updates = UpdateFactory.create("CREATE GRAPH <http://example>");
UpdateProcessRemoteBase engine = (UpdateProcessRemoteBase) UpdateExecutionFactory.createRemote(updates, SERVICE);
Assert.assertNotNull(engine);
// Check that auth settings were changed
Assert.assertTrue(engine.isUsingAuthentication());
} finally {
serviceContext.remove(Service.queryAuthUser);
serviceContext.remove(Service.queryAuthPwd);
}