class_docstr: This class stores additional information on backbones.
      
docstr: Downloads ImageNet weights and returns path to weights file.
          
docstr_tok: ["Downloads","ImageNet","weights","and","returns","path","to","weights","file","."]
code: def download_imagenet(self):
      """Downloads ImageNet weights and returns path to weights file."""
      raise NotImplementedError(
          "download_imagenet method not implemented."
      )
  
file_path: ImageAI/imageai_tf_deprecated/Detection/keras_retinanet/models/__init__.py
imports: from __future__ import print_function
  import sys
label_desc: Use image node_id 3 for calling the Backbone obj's underlying member method code with example usage: obj.download_imagenet() without return types