code: def _set_hwxy_attrs(attr):
          
          bbox = attr['bbox']
          attr['x0'] = bbox[0]
          attr['x1'] = bbox[2]
          attr['y0'] = bbox[1]
          attr['y1'] = bbox[3]
          attr['height'] = attr['y1'] - attr['y0']
          attr['width'] = attr['x1'] - attr['x0']
          return attr
docs: Using the bbox attribute, set the h, w, x0, x1, y0, and y1
          attributes.