---
title: MTRClusterTestClusterAttributeNullableBitmap64ID
framework: matter
role: symbol
role_heading: Type Property
path: matter/mtrattributeidtype/mtrclustertestclusterattributenullablebitmap64id
---

# MTRClusterTestClusterAttributeNullableBitmap64ID

## Declaration

```swift
static var MTRClusterTestClusterAttributeNullableBitmap64ID: MTRAttributeIDType { get }
```