getForumTopicIconStickers(chatId, form = {}) {
    form.chat_id = chatId;
    return this._request('getForumTopicIconStickers', { form });
  }
Use this method to get custom emoji stickers, which can be used as a forum topic icon by any user.

@param {Number|String} chatId Unique identifier for the target group or username of the target supergroup (in the format @supergroupusername)
@param {Object} [options] Additional Telegram query options
@return {Promise} Array of [Sticker](https://core.telegram.org/bots/api#sticker) objects
@see https://core.telegram.org/bots/api#getforumtopiciconstickers