有没有办法取消挂起的bot.wait_for？

import discord
from discord.ext import commands

bot = commands.Bot(command_prefix='!')

@bot.event
async def on_ready():
    print('Bot is ready')

@bot.command()
async def cancel_wait(ctx):
    # 等待特定消息的发生
    def check(message):
        return message.author == ctx.author and message.content.lower() == 'cancel'

    try:
        # 等待消息，最长等待时间为60秒
        task = bot.wait_for('message', check=check, timeout=60)
        await task
    except asyncio.TimeoutError:
        await ctx.send('等待超时')
    else:
        await ctx.send('等待被取消')

@bot.command()
async def cancel(ctx):
    # 取消挂起的bot.wait_for()
    for task in asyncio.all_tasks():
        if task.get_coro() == bot.wait_for('message', check=check, timeout=60):
            task.cancel()
            break

bot.run('YOUR_BOT_TOKEN')