yaebal
Available methods

getForumTopicIconStickers()

Use this method to get custom emoji stickers, which can be used as a forum topic icon by any user. Requires no parameters. Returns an Array of Sticker objects.

parameters

this method takes no parameters.

returns

Sticker[]

usage in yaebal

getForumTopicIconStickers is directly typed on Api — call it straight off bot.api.

bot.ts 
await bot.api.getForumTopicIconStickers();
official Bot API docs: https://core.telegram.org/bots/api/#getforumtopiciconstickers