return sum == 0L;
    }
    return true;
  }

  long longSize() {
    Segment<K, V>[] segments = this.segments;
    long sum = 0;
    for (Segment<K, V> segment : segments) {
      sum += segment.count;
    }
    return sum;
  }

  @Override
  public int size() {
    return Ints.saturatedCast(longSize());
  }