# Bucket questions 

## Context

Please implement two functions: refillTokenBucket and useTokens. Two classes are already defined: DistributedCache and TokenBucket.

refillTokenBucket(user_id): Refill tokens for the specified user's bucket.

useTokens(user_id, tokens): Check if there are enough tokens in the specified user's token bucket. If so, update the remaining token count and return true; otherwise, return false. You are required to use instances of the existing classes to implement these functions.

## Requirements

Use the API provided by DistributedCache to get and update the user's TokenBucket.
Implement the functionality using existing class instances and ensure the behavior is correct across multiple calls