---
title: clusterUnitTestingAttributeNullableBitmap32ID
framework: matter
role: symbol
role_heading: Type Property
path: matter/mtrattributeidtype/clusterunittestingattributenullablebitmap32id
---

# clusterUnitTestingAttributeNullableBitmap32ID

## Declaration

```swift
static var clusterUnitTestingAttributeNullableBitmap32ID: MTRAttributeIDType { get }
```