有没有办法让我的discord机器人在播放完一首歌后断开与语音通道的连接？

import discord
from discord.ext import commands

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

@bot.command()
async def play(ctx, song):
    # 播放歌曲的逻辑
    await ctx.send(f'正在播放歌曲：{song}')
    
    # 播放完毕后断开与语音通道的连接
    voice_channel = ctx.author.voice.channel
    voice_client = await voice_channel.connect()
    voice_client.play(discord.FFmpegPCMAudio(song))
    while voice_client.is_playing():
        await asyncio.sleep(1)
    await voice_client.disconnect()

bot.run('YOUR_BOT_TOKEN')