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# addReferenceSignature(_:representing:)

Adds a reference signature and its associated metadata to a catalog.

```
func addReferenceSignature(_ signature: SHSignature, representing mediaItems: [SHMediaItem]) throws
```

## Parameters

`signature`

The reference signature for the audio recording.

`mediaItems`

The metadata for the recording.

## Discussion

> Note:
> This system ignores calls to `addReferenceSignature(_:representing:)` after adding the catalog to an `SHSession`.

---

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