---
title: MTRClusterTestClusterAttributeNullableBitmap32ID
framework: matter
role: symbol
role_heading: Type Property
path: matter/mtrattributeidtype/mtrclustertestclusterattributenullablebitmap32id
---

# MTRClusterTestClusterAttributeNullableBitmap32ID

## Declaration

```swift
static var MTRClusterTestClusterAttributeNullableBitmap32ID: MTRAttributeIDType { get }
```