---
title: clusterUnitTestingAttributeNullableStructID
framework: matter
role: symbol
role_heading: Type Property
path: matter/mtrattributeidtype/clusterunittestingattributenullablestructid
---

# clusterUnitTestingAttributeNullableStructID

## Declaration

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