---
title: clusterUnitTestingAttributeNullableEnum16ID
framework: matter
role: symbol
role_heading: Type Property
path: matter/mtrattributeidtype/clusterunittestingattributenullableenum16id
---

# clusterUnitTestingAttributeNullableEnum16ID

## Declaration

```swift
static var clusterUnitTestingAttributeNullableEnum16ID: MTRAttributeIDType { get }
```