https://developer.apple.com/documentation/createml/creating_an_image_classifier_model
以下操作 在Xcode 10、Xcode 11 beta中 都找不到相应的菜单或按钮，苹果弄错了？
Create an Image Classifier Project
Use Create ML to create an image classification project. With Xcode open, Control-click Xcode’s Dock icon and choose Open Developer Tool > Create ML. Or, from the Xcode menu, choose Open Developer Tool > Create ML.
In Create ML, choose File > New to see the list of model templates. Select Image Classifier and click Next.
