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# isDynamic

A Boolean value that indicates whether the system generates the type.

```
var isDynamic: Bool { get }
```

## Discussion

The system recognizes dynamic types, but they may not be directly declared or claimed by an app. The system returns dynamic types when it encounters a file whose metadata doesn’t have a corresponding type known to the system.

The system either declares a type or dynamically generates a type, but not both.

---

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