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# model()

Returns the model layer object associated with the receiver, if any.

```
func model() -> Self
```

## Return Value

A layer instance representing the underlying model layer.

## Discussion

Calling this method on a layer in the presentation tree returns the corresponding layer object in the model tree. This method returns a value only when a transaction involving changes to the presentation layer is in progress. If no transaction is in progress, the results of calling this method are undefined.

---

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