code: def sticker_templates():
      
      voc = DisplayList()
      stickers = getStickerTemplates()
      for sticker in stickers:
          voc.add(sticker.get('id'), sticker.get('title'))
      if voc.index == 0:
          logger.warning('Sampletype: getStickerTemplates is empty!')
      return voc
docs: It returns the registered stickers in the system.
      :return: a DisplayList object