def show_sticker_file_id(bot, update, session, chat, user):
    """Give the file id for a sticker."""
    if update.message.reply_to_message is None:
        return "You need to reply to a sticker to use this command."

    message = update.message.reply_to_message
    if message.sticker is None:
        return "You need to reply to a sticker."

    return message.sticker.file_unique_id