LaravelFCM\Response\DownstreamResponse::needToResend PHP Метод

    private function needToResend($index, $result)
    {
        if (array_key_exists(self::ERROR, $result) && (in_array(self::UNAVAILABLE, $result) || in_array(self::DEVICE_MESSAGE_RATE_EXCEEDED, $result) || in_array(self::INTERNAL_SERVER_ERROR, $result))) {
            if ($this->tokens[$index]) {
                $this->tokensToRetry[] = $this->tokens[$index];
            }
            return true;
        }
        return false;
    }