---
title: "controller(_:commissioningSessionEstablishmentDone:)"
framework: matter
role: symbol
role_heading: Instance Method
path: "matter/mtrdevicecontrollerdelegate/controller(_:commissioningsessionestablishmentdone:)"
---

# controller(_:commissioningSessionEstablishmentDone:)

## Declaration

```swift
optional func controller(_ controller: MTRDeviceController, commissioningSessionEstablishmentDone error: (any Error)?)
```

## Mentioned in

Onboarding a Matter device