docs: def grow(self, *padding):
          """ Grow this rectangle by the given padding on all sides. """
          try:
              lpad, rpad, tpad, bpad = padding
          except ValueError:
              lpad = rpad = tpad = bpad = padding[0]
  
          self._bottom -= bpad
          self._left -= lpad
          self._width += lpad + rpad
          self._height += tpad + bpad
          return self