code: def apply(self, workplane, world_coords=CoordSystem()):
          
  
          self.world_coords = world_coords
          return workplane.cut(self.world_obj)
docs: Application of screwdrive indentation into a workplane
          (centred on the given world coordinates).
  
          :param workplane: workplane with solid to alter
          :type workplane: :class:`cadquery.Workplane`
          :param world_coords: coorindate system relative to ``workplane`` to move
                               cutter before it's cut from the ``workplane``
          :type world_coords: :class:`CoordSystem`