how can line bot delete sent message(text or stickers)?

Question

i try to find delete already sent message by bot.
i can see Line official have already same function.
but i can not find on api document.
don't Line open this API for developers?

ksyt · Answer

I checked the document: https://developers.line.biz/en/reference/messaging-api/#messages
but I can't find the feature related to unsend. Maybe LINE doesn't open this API.

Q&A

how can line bot delete sent message(text or stickers)?