code: def download(cls, architecture, path="./"):
      if cls.sanity_check(architecture):
          architecture_file = download_file(
              cls.architecture_map[architecture], directory=path
          )
          if not architecture_file:
              return None
  
          print(
              "Coreml model {} is saved in [{}]".format(
                  architecture, path
              )
          )
          return architecture_file
      else:
          return None
  
file_path: MMdnn/mmdnn/conversion/examples/coreml/extractor.py
imports: from __future__ import absolute_import
  import os
  import coremltools
  from coremltools.models import MLModel
  from mmdnn.conversion.examples.imagenet_test import TestKit
  from mmdnn.conversion.examples.extractor import base_extractor
  from mmdnn.conversion.common.utils import download_file
label_desc: Use image node_id 1 for calling the coreml_extractor obj's underlying member method code with example usage: obj.download(cls, architecture, path) and returns: architecture_file, None, None