---
title: MTRClusterTestClusterAttributeNullableBooleanID
framework: matter
role: symbol
role_heading: Type Property
path: matter/mtrattributeidtype/mtrclustertestclusterattributenullablebooleanid
---

# MTRClusterTestClusterAttributeNullableBooleanID

## Declaration

```swift
static var MTRClusterTestClusterAttributeNullableBooleanID: MTRAttributeIDType { get }
```