A carousel, also known as a slider, rotates and displays a list of widgets in
a slideshow format, with buttons navigating to the previous or next widget.

For example, this is a JSON representation of a carousel that contains three
text paragraph widgets.

```
{
  "carouselCards": [
    {
      "widgets": [
        {
          "textParagraph": {
            "text": "First text paragraph in carousel",
          }
        }
      ]
    },
    {
      "widgets": [
        {
          "textParagraph": {
            "text": "Second text paragraph in carousel",
          }
        }
      ]
    },
    {
      "widgets": [
        {
          "textParagraph": {
            "text": "Third text paragraph in carousel",
          }
        }
      ]
    }
  ]
}
```

[Google Chat apps](https://developers.google.com/workspace/chat):

Protobuf type google.apps.card.v1.Carousel