code: def heightmap_dig_bezier(
      hm: np.ndarray,
      px: Tuple[int, int, int, int],
      py: Tuple[int, int, int, int],
      startRadius: float,
      startDepth: float,
      endRadius: float,
      endDepth: float,
  ) -> None:
      
      lib.TCOD_heightmap_dig_bezier(
          _heightmap_cdata(hm),
          px,
          py,
          startRadius,
          startDepth,
          endRadius,
          endDepth,
      )
docs: Carve a path along a cubic Bezier curve.
  
      Both radius and depth can vary linearly along the path.
  
      Args:
          hm (numpy.ndarray): A numpy.ndarray formatted for heightmap functions.
          px (Sequence[int]): The 4 `x` coordinates of the Bezier curve.
          py (Sequence[int]): The 4 `y` coordinates of the Bezier curve.
          startRadius (float): The starting radius size.
          startDepth (float): The starting depth.
          endRadius (float): The ending radius size.
          endDepth (float): The ending depth.