def METHOD_NAME(self) -> None:
    """
    Removes one attempt from the pool of available Quota for that user/ip
    """
    def updateTxn(cacheKey: str) -> None:
        key = db.Key(self.rateLimitKind, cacheKey)
        obj = db.Get(key)
        if obj is None:
            obj = db.Entity(key)
            obj["value"] = 0
        obj["value"] += 1
        obj["expires"] = utils.utcNow() + timedelta(minutes=2 * self.minutes)
        db.Put(obj)
    lockKey = "%s-%s-%s" % (self.resource, self._getEndpointKey(), self._getCurrentTimeKey())
    db.RunInTransaction(updateTxn, lockKey)