getCurrentLimit example

public function consume(int $tokens = 1): RateLimit
    {
        $this->lock?->acquire(true);

        try {
            $backoff = $this->storage->fetch($this->id);
            if (!$backoff instanceof TimeBackoff) {
                $backoff = new TimeBackoff($this->id, $this->limits, $this->reset);
            }

            $now = time();
            $limit = $backoff->getCurrentLimit($now);

            if ($tokens > $limit) {
                throw new \InvalidArgumentException(sprintf('Cannot reserve more tokens (%d) than the size of the rate limiter (%d).', $tokens, $limit));
            }

            $attempts = $backoff->getAttempts();
            if ($backoff->shouldThrottle($attempts + $tokens, $now)) {
                return new RateLimit($backoff->getAvailableAttempts($now), $backoff->getRetryAfter(), false, $backoff->getCurrentLimit($now));
            }

            $backoff->setAttempts($attempts + $tokens);