How to update Core ML model with a file in Document directory.

ml.swift

do {
    // You have to add the file whose name is changed from KerasMNIST.mlmodel to KerasMNIST.bin to app target.
    // In order to avoid that Xcode compiles a mlmodel file automatcally.
    guard let url = Bundle.main.url(forResource: "KerasMNIST", withExtension: "bin") else { return }
    let compiledURL = try MLModel.compileModel(at: url)
    print(compiledURL)
    let model = try MLModel(contentsOf: compiledURL)
    print(model)
} catch {
    print(error)
}