public int size() {
    Segment<K, V, E, S>[] segments = this.segments;
    long sum = 0;
    for (int i = 0; i < segments.length; ++i) {
      sum += segments[i].count;
    }
    return Ints.saturatedCast(sum);
  }

  @Override
  public @Nullable V get(@Nullable Object key) {
    if (key == null) {
      return null;
    }
    int hash = hash(key);

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

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

  @CanIgnoreReturnValue // TODO(b/27479612): consider removing this
  @Override
  public @Nullable V get(@Nullable Object key) {
    if (key == null) {
      return null;
    }

    of the data type of the input image.
*   The image processing ops do not take `min` and `max` inputs any more,
    casting safety is handled by `saturate_cast`, which makes sure over- and
    underflows are handled before casting to data types with smaller ranges.
*   For C++ API users: `IsLegacyScalar` and `IsLegacyVector` are now gone from