如何从成员的审核日志中获取所有昵称[Discord.py]

Question

这是我的代码，试图获取用户的昵称。其部分工作。我的意思是，它只能获取昵称，但只能获取最近的昵称。有没有办法获得所有昵称？

    async def test(self, ctx, member: discord.Member=None):
    if member is None:
        member = ctx.author
    nicknames = ""
    async for entry in ctx.guild.audit_logs(limit=None, action=discord.AuditLogAction.member_update):
        if entry.target == member:
            if entry.before.nick != entry.after.nick and entry.after.nick is not None:
                nicknames += f"{entry.after.nick}, "
    print(nicknames[:-2])