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  "title" : "invalidateFooterText(forSubtypesOf:)"
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# invalidateFooterText(forSubtypesOf:)

Invalidates the footer text for the subtypes of the given project type.

```
func invalidateFooterText(forSubtypesOf projectType: PHProjectType)
```

## Parameters

`projectType`

The project type whose subtypes you’d like to invalidate.

## Discussion

Use [`undefined`](/documentation/PhotosUI/PHProjectType/undefined) to invalidate the root-level footer text.

---

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