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| init?(from document: [String: Any]) { | |
| guard let idString = document["id"] as? String, | |
| let id = Int(idString), | |
| let name = document["name"] as? String, | |
| let priceString = document["pricePerUnit"] as? String, | |
| let price = Double(priceString) else { return nil } | |
| self.init(id: id, name: name, pricePerUnit: price) | |
| } |
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