mId = e.getAttribute(AccountService.A_ID);
mId = e.getAttribute(AccountService.A_ID, null);
    public ZIdentity(Element e) throws ServiceException {        mName = e.getAttribute(AccountService.A_NAME);        mId = e.getAttribute(AccountService.A_ID);        mAttrs = new HashMap<String, Object>();        for (Element a : e.listElements(AccountService.E_A)) {            StringUtil.addToMultiMap(mAttrs, a.getAttribute(AccountService.A_NAME), a.getText());         }    }