---
title: "readAttributeLineup(completion:)"
framework: matter
role: symbol
role_heading: Instance Method
path: "matter/mtrbaseclusterchannel/readattributelineup(completion:)"
---

# readAttributeLineup(completion:)

## Declaration

```swift
func readAttributeLineup(completion: @escaping @Sendable (MTRChannelClusterLineupInfoStruct?, (any Error)?) -> Void)
```

```swift
func readAttributeLineup() async throws -> MTRChannelClusterLineupInfoStruct
```