user = (User) mgr.saveUser(user);
user = mgr.saveUser(user);
    public void testSaveUser() throws Exception {        user = (User) mgr.getUser("tomcat");        user.setPhoneNumber("303-555-1212");        if (log.isDebugEnabled()) {            log.debug("saving user with updated phone number: " + user);        }        user = (User) mgr.saveUser(user);        assertTrue(user.getPhoneNumber().equals("303-555-1212"));        assertTrue(user.getRoles().size() == 1);    }