code: def export_coreml(self, filename):
          
          print('This model is exported as a custom Core ML model. In order to use it in your\n'
                'application, you must also include "libRecommender.dylib". For additional\n'
                'details see:\n'
                'https://apple.github.io/turicreate/docs/userguide/recommender/coreml-deployment.html')
  
          import turicreate as tc
          self.__proxy__.export_to_coreml(filename)
docs: Export the model in Core ML format.
  
          Parameters
          ----------
          filename: str
            A valid filename where the model can be saved.
  
          Examples
          --------
          >>> model.export_coreml('myModel.mlmodel')