sclass RGBImageRectAndState > RGBImageAndRect {
  S state;

  *() {}
  *(RGBImage *image, Rect *rect, S *state) {}
  *(RGBImage *image, RectAndState rectAndState) {
    if (rectAndState != null) {
      rect = rectAndState.r;
      state = rectAndState.state;
    }
  }
}