Actions on google 调用app.buildCarousel（）时如何在for循环中迭代调用addItems

我想基于结果集在旋转木马中创建多个项目。我使用for循环来解析结果集。但我不知道如何在for循环中添加项

样本：

app.ask(app.buildRichResponse()
.addSimpleResponse("Alright. Here are the result")
.addSuggestions(['Basic Card', 'List', 'Carousel', 'Suggestions']),
app.buildCarousel()
videos.forEach(function(item){
  .addItems(app.BuildOptionItem('${item.id.videoId}',['1', 'First one'])
                .setTitle(item.snippet.title)
                .setDescription(item.snippet.description)
                .setImage(item.snippet.thumbnails.default.url, 'image'))

});

Try this.
const carousel = app.buildCarousel()

videos.forEach(function(item){
    carousel.addItems(app.BuildOptionItem('${item.id.videoId}',['1', 'First one'])
            .setTitle(item.snippet.title)
            .setDescription(item.snippet.description)
            .setImage(item.snippet.thumbnails.default.url, 'image'))

});

app.ask(app.buildRichResponse()
.addSimpleResponse("Alright. Here are the result")
.addSuggestions(['Basic Card', 'List', 'Carousel', 'Suggestions']),
carousel
);