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# ALAssetsLibraryGroupsEnumerationResultsBlock

Signature for the block executed when a match is found during enumeration using `ALAssetsLibrary/enumerateGroups(withTypes:using:failureBlock:)`.

```
typedef void (^)(ALAssetsGroup *, _Bool *) ALAssetsLibraryGroupsEnumerationResultsBlock;
```

## Discussion

The block parameters are defined as follows:

- group: The current asset group in the enumeration.
- stop: A pointer to a boolean value; set the value to <doc://com.apple.documentation/documentation/Swift/true> to stop enumeration.

---

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