@Nullable Comparator<? super V> valueComparator;

    public Builder() {
      this.entries = Lists.newArrayList();
    }

    Builder(int initCapacity) {
      this.entries = Lists.newArrayListWithCapacity(initCapacity);
    }

    @CanIgnoreReturnValue
    public Builder<K, V> put(K key, V value) {
      entries.add(entryOf(key, value));
      return this;
    }

// versions and bytes rebalanced out of a pool
type rebalanceStats struct {
	InitFreeSpace uint64 `json:"initFreeSpace" msg:"ifs"` // Pool free space at the start of rebalance
	InitCapacity  uint64 `json:"initCapacity" msg:"ic"`   // Pool capacity at the start of rebalance

	Buckets           []string      `json:"buckets" msg:"bus"`           // buckets being rebalanced or to be rebalanced

		case "ifs":
			z.InitFreeSpace, err = dc.ReadUint64()
			if err != nil {
				err = msgp.WrapError(err, "InitFreeSpace")
				return
			}
		case "ic":
			z.InitCapacity, err = dc.ReadUint64()
			if err != nil {
				err = msgp.WrapError(err, "InitCapacity")
				return
			}
		case "bus":
			var zb0002 uint32
			zb0002, err = dc.ReadArrayHeader()
			if err != nil {
				err = msgp.WrapError(err, "Buckets")