def download_stickers_to_file(self, bot: Bot, sticker: Sticker, file_object: BufferedWriter):
"""Download Sticker as images to file_object
Args:
bot (:obj:`telegram.bot.Bot`): Telegram Api Bot Object.
sticker (:obj:`telegram.sticker.Sticker`): A Sticker object
file_object (:obj:`io.BufferedWriter`): File like object
"""
sticker = bot.get_file(sticker.file_id)
sticker.download(out=file_object)
if getattr(file_object, 'save', None):
file_object.save()
else:
save_file(file_object)
image = Image.open(file_object.name)
image.save(file_object, format='png')
return file_object
