我试图发出一个info命令，我想获得玩家的top_角色，并且只能使用member对象访问它。但我的info命令中只有user对象，所以如何将user转换为member？
脚本：

@client.command(pass_context=True, name='info')
async def info(ctx, *, user: discord.User):
    member = commands.converter.MemberConverter().convert(user.id)
    embed = discord.Embed(
        title=str(user.name) + "'s Info.",
        description=f"""
        Name: {user.name}
        Created At: {user.created_at}
        Discriminator: {user.discriminator}
        Display Name: {user.display_name}
        ID: {user.id}
        Is Avatar Animated: {user.is_avatar_animated()}
        Top Role: {member.top_role}
        """
    )
    await ctx.send(embed=embed)