---
title: clusterUnitTestingAttributeNullableInt40sID
framework: matter
role: symbol
role_heading: Type Property
path: matter/mtrattributeidtype/clusterunittestingattributenullableint40sid
---

# clusterUnitTestingAttributeNullableInt40sID

## Declaration

```swift
static var clusterUnitTestingAttributeNullableInt40sID: MTRAttributeIDType { get }
```