code: def short_hash(name):
      if name not in _model_sha1:
          raise ValueError(
              "Pretrained model for {name} is not available.".format(
                  name=name
              )
          )
      return _model_sha1[name][:8]
  
file_path: mxnet/python/mxnet/gluon/model_zoo/model_store.py
imports: import os
  import zipfile
  import logging
  import uuid
  from ..utils import download, check_sha1, replace_file, TemporaryDirectory
  from ...None import base
label_desc: Use image node_id 1 for calling a global function with example usage: short_hash(name) and returns: _model_sha1