class SignProtocol {

    public DoSignInfo signIn() throws BiliLiveException {
        DoSignInfo doSignInfo = httpHelper.getBiliLiveJSON(DO_SIGN_IN_G, DoSignInfo.class, EXCEPTION_SIGN);
        if (doSignInfo.getCode() == -101) throw new NotLoggedInException();
        return doSignInfo;
    }

    public  SignProtocol(@NotNull Session session);

}