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# handleBDXTransferSessionBegin(forNodeID:controller:fileDesignator:offset:completion:)

```
optional func handleBDXTransferSessionBegin(forNodeID nodeID: NSNumber, controller: MTRDeviceController, fileDesignator: String, offset: NSNumber, completion: @escaping @Sendable ((any Error)?) -> Void)
```

```
optional func handleBDXTransferSessionBegin(forNodeID nodeID: NSNumber, controller: MTRDeviceController, fileDesignator: String, offset: NSNumber) async throws
```

---

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