---
title: clusterUnitTestingAttributeNullableOctetStringID
framework: matter
role: symbol
role_heading: Type Property
path: matter/mtrattributeidtype/clusterunittestingattributenullableoctetstringid
---

# clusterUnitTestingAttributeNullableOctetStringID

## Declaration

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