code: def _CreateStopPlacemark(self, stop_folder, stop, style_id):
      
      desc_items = []
      desc_items.append("Stop id: %s" % stop.stop_id)
      if stop.stop_desc:
        desc_items.append(stop.stop_desc)
      if stop.stop_url:
        desc_items.append('Stop info page: <a href="%s">%s</a>' % (
            stop.stop_url, stop.stop_url))
      description = '<br/>'.join(desc_items) or None
      placemark = self._CreatePlacemark(stop_folder, stop.stop_name,
                                          description=description,
                                          style_id=style_id)
      point = ET.SubElement(placemark, 'Point')
      coordinates = ET.SubElement(point, 'coordinates')
      coordinates.text = '%.6f,%.6f' % (stop.stop_lon, stop.stop_lat)
docs: Creates a new stop <Placemark/> element.
  
      Args:
        stop_folder: the KML folder the placemark will be added to.
        stop: the actual Stop to create a placemark for.
        style_id: optional argument indicating a style id to add to the placemark.