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# init(listDescriptor:)

Initializes a newly allocated instance as an empty list descriptor.

```
convenience init(listDescriptor: ())
```

## Return Value

An empty list descriptor, or `nil` if an error occurs.

## Discussion

You can add items to the empty list descriptor with [`insert(_:at:)`](/documentation/Foundation/NSAppleEventDescriptor/insert(_:at:)). The list indices are one-based.

---

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