code: def set_chat_sticker_set(self, chat_id, sticker_set_name):
          
          result = apihelper.set_chat_sticker_set(self.token, chat_id, sticker_set_name)
          return result
docs: Use this method to set a new group sticker set for a supergroup. The bot must be an administrator
          in the chat for this to work and must have the appropriate admin rights.
          Use the field can_set_sticker_set optionally returned in getChat requests to check
          if the bot can use this method. Returns True on success.
          :param chat_id: Unique identifier for the target chat or username of the target supergroup
          (in the format @supergroupusername)
          :param sticker_set_name: Name of the sticker set to be set as the group sticker set
          :return: