---
title: "readAttributeFeatureMap(completion:)"
framework: matter
role: symbol
role_heading: Instance Method
path: "matter/mtrbaseclusterapplicationbasic/readattributefeaturemap(completion:)"
---

# readAttributeFeatureMap(completion:)

## Declaration

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

```swift
func readAttributeFeatureMap() async throws -> NSNumber
```