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# captionsNotPresentInPreviousGroups(in:)

Returns the set of captions that are present in the given group but were not present in any group previously vended by calls to next().

```
func captionsNotPresentInPreviousGroups(in captionGroup: AVCaptionGroup) -> [AVCaption]
```

## Parameters

`captionGroup`

The group containing the captions of interest.

## Return Value

An array of AVCaption objects.

---

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