docs: def add_extruded_obstacles(self, top_polys, make_ccw=True):
          """
          Add polyhedras to the Place by giving their top polygon and
          applying extrusion along the z axis. The resulting polygon
          from the intersection will be declared as a hole in the Surface.
          
          :param top_polys: Polygons to be extruded to the Surface.
          :type top_polys: list of ``pyny.Polygon``
          :param make_ccw: If True, points will be sorted ccw.
          :type make_ccw: bool
          :returns: None
  
          .. note:: When a top polygon is projected and it
              instersects multiple Surface's polygons, a independent
              polyhedron will be created for each individual 
              intersection\*.
          .. warning:: The top polygons have to be over the Surface, that
              is, their z=0 projection have to be inside of Surface's z=0 
              projection.
          .. warning:: If the Polyhedra are not created with this method
              or ``Polyhedron.by_two_polygons()``, holes will not be 
              added.
          """
          if type(top_polys) != list: top_polys = [top_polys]
          for poly1 in top_polys:
              if type(poly1) != Polygon:
                  obstacle = Polygon(poly1, make_ccw)
              intersections_dict = self.surface.intersect_with(obstacle)
              
              base = []
              for i, xy in intersections_dict.items():
                  base.append(self.surface[i].get_height(xy, full=True))
              base_surf = Surface(base)
              base_surf.melt()
              
              for base_poly in base_surf:
                  obst_points = obstacle.get_height(base_poly.points, 
                                                  full=True)
                  self.surface.holes.append(base_poly)
                  self.polyhedra.append(Polyhedron.by_two_polygons(
                                        base_poly.points, 
                                        obst_points, 
                                        make_ccw))