---
title: clusterUnitTestingCommandTestNullableOptionalResponseID
framework: matter
role: symbol
role_heading: Type Property
path: matter/mtrcommandidtype/clusterunittestingcommandtestnullableoptionalresponseid
---

# clusterUnitTestingCommandTestNullableOptionalResponseID

## Declaration

```swift
static var clusterUnitTestingCommandTestNullableOptionalResponseID: MTRCommandIDType { get }
```