---
title: optionalStruct
framework: matter
role: symbol
role_heading: Instance Property
path: matter/mtrunittestingclustertestcomplexnullableoptionalrequestparams/optionalstruct
---

# optionalStruct

## Declaration

```swift
@NSCopying var optionalStruct: MTRUnitTestingClusterSimpleStruct? { get set }
```