How to use the ratelimitingfilter.ratelimitingfilter.TokenBucket function in ratelimitingfilter

self.rate = rate
        self.per = per
        self.burst = burst

        self._default_bucket = TokenBucket(rate, per, burst)
        self._substr_buckets = None
        self._auto_buckets = None

        if 'match' in kwargs:
            if kwargs['match'] == 'auto':
                self._auto_buckets = defaultdict(partial(TokenBucket, rate, per, burst))
            else:
                self._substr_buckets = {}
                for s in kwargs['match']:
                    # Create a new token bucket for each substring
                    self._substr_buckets[s] = TokenBucket(rate, per, burst)

:param kwargs:
            Additional config options that can be passed to the filter.
        """
        super(RateLimitingFilter, self).__init__()

        self.rate = rate
        self.per = per
        self.burst = burst

        self._default_bucket = TokenBucket(rate, per, burst)
        self._substr_buckets = None
        self._auto_buckets = None

        if 'match' in kwargs:
            if kwargs['match'] == 'auto':
                self._auto_buckets = defaultdict(partial(TokenBucket, rate, per, burst))
            else:
                self._substr_buckets = {}
                for s in kwargs['match']:
                    # Create a new token bucket for each substring
                    self._substr_buckets[s] = TokenBucket(rate, per, burst)

:param rate:
            The number of records to restrict to, per the specified time interval. Default 1.
        :param per:
            The number of seconds during which 'rate' records may be sent. Default 30.
        :param burst:
            The maximum number of records that can be sent before rate limiting kicks in.
        :param kwargs:
            Additional config options that can be passed to the filter.
        """
        super(RateLimitingFilter, self).__init__()

        self.rate = rate
        self.per = per
        self.burst = burst

        self._default_bucket = TokenBucket(rate, per, burst)
        self._substr_buckets = None
        self._auto_buckets = None

        if 'match' in kwargs:
            if kwargs['match'] == 'auto':
                self._auto_buckets = defaultdict(partial(TokenBucket, rate, per, burst))
            else:
                self._substr_buckets = {}
                for s in kwargs['match']:
                    # Create a new token bucket for each substring
                    self._substr_buckets[s] = TokenBucket(rate, per, burst)