如何使SuggestedActions成为列表而不是轮播

using Microsoft.Bot.Builder.Dialogs;
using Microsoft.Bot.Schema;

public class MyDialog : ComponentDialog
{
    public MyDialog() : base(nameof(MyDialog))
    {
        AddDialog(new WaterfallDialog(nameof(WaterfallDialog), new WaterfallStep[]
        {
            async (stepContext, cancellationToken) =>
            {
                var reply = stepContext.Context.Activity.CreateReply();
                reply.SuggestedActions = new SuggestedActions()
                {
                    Actions = new List<CardAction>()
                    {
                        new CardAction() { Title = "Option 1", Type = ActionTypes.ImBack, Value = "Option 1" },
                        new CardAction() { Title = "Option 2", Type = ActionTypes.ImBack, Value = "Option 2" },
                        new CardAction() { Title = "Option 3", Type = ActionTypes.ImBack, Value = "Option 3" },
                    },
                    Style = SuggestedActionStyle.List // 设置为列表样式
                };
                await stepContext.Context.SendActivityAsync(reply, cancellationToken);
                return await stepContext.EndDialogAsync();
            }
        }));
    }
}