---
title: nullableOptionalStruct
framework: matter
role: symbol
role_heading: Instance Property
path: matter/mtrtestclusterclusternullablesandoptionalsstruct/nullableoptionalstruct
---

# nullableOptionalStruct

## Declaration

```swift
@NSCopying var nullableOptionalStruct: MTRTestClusterClusterSimpleStruct? { get set }
```