DBImageDecoderUsage.swift

let task = urlSession.dataTask(with: url) { data, _, _ in
    guard let data = data else {
        return
    }
                    
    let imageDecoder = DBImageDecoder()
    imageDecoder.setData(data, allDataReceived: true)
                    
    guard let uiImage = imageDecoder.uiImage else {
        return
    }
                    
    DispatchQueue.main.async {
        self.uiImage = uiImage
    }
}
            
task.resume()