---
title: clusterUnitTestingAttributeNullableBitmap64ID
framework: matter
role: symbol
role_heading: Type Property
path: matter/mtrattributeidtype/clusterunittestingattributenullablebitmap64id
---

# clusterUnitTestingAttributeNullableBitmap64ID

## Declaration

```swift
static var clusterUnitTestingAttributeNullableBitmap64ID: MTRAttributeIDType { get }
```