---
title: "readAttributeSources(completionHandler:)"
framework: matter
role: symbol
role_heading: Instance Method
path: "matter/mtrbaseclusterpowersourceconfiguration/readattributesources(completionhandler:)"
---

# readAttributeSources(completionHandler:)

## Declaration

```swift
func readAttributeSources(completionHandler: @escaping @Sendable ([Any]?, (any Error)?) -> Void)
```

```swift
func readAttributeSources() async throws -> [Any]
```