docs: private List<Bucket<V>> refillBuckets() {
      List<Bucket<V>> bucketsToTrim = new ArrayList<>(mBuckets.size());
  
      for (int i = 0, len = mBuckets.size(); i < len; ++i) {
        final Bucket<V> oldBucket = mBuckets.valueAt(i);
        final int bucketSize = oldBucket.mItemSize;
        final int maxLength = oldBucket.mMaxLength;
        final int bucketInUseCount = oldBucket.getInUseCount();
        if (oldBucket.getFreeListSize() > 0) {
          bucketsToTrim.add(oldBucket);
        }
        mBuckets.setValueAt(
            i,
            new Bucket<V>(
                getSizeInBytes(bucketSize),
                maxLength,
                bucketInUseCount,
                mPoolParams.fixBucketsReinitialization));
      }
  
      return bucketsToTrim;
    }