code: def set_up_glove(url: str, byt: bytes, change_etag_every: int = 1000):
      # Mock response for the datastore url that returns glove vectors
      responses.add(
          responses.GET,
          url,
          body=byt,
          status=200,
          content_type="application/gzip",
          stream=True,
          headers={"Content-Length": str(len(byt))},
      )
  
      etags_left = change_etag_every
      etag = "0"
  
      def head_callback(_):
          """
          Writing this as a callback allows different responses to different HEAD requests.
          In our case, we're going to change the ETag header every `change_etag_every`
          requests, which will allow us to simulate having a new version of the file.
          """
          nonlocal etags_left, etag
          headers = {"ETag": etag}
          # countdown and change ETag
          etags_left -= 1
          if etags_left <= 0:
              etags_left = change_etag_every
              etag = str(int(etag) + 1)
          return (200, headers, "")
  
      responses.add_callback(
          responses.HEAD, url, callback=head_callback
      )
  
imports: import os
  import pathlib
  import json
  import time
  import shutil
  from filelock import Timeout
  import pytest
  import responses
  import torch
  from allennlp.common.file_utils import FileLock, _resource_to_filename, filename_to_url, cached_path, open_compressed, CacheFile, _Meta, _find_entries, inspect_cache, remove_cache_entries, LocalCacheResource, TensorCache
  from allennlp.common import Params
  from allennlp.modules.token_embedders import ElmoTokenEmbedder
  from allennlp.common.testing import AllenNlpTestCase
  from allennlp.predictors import Predictor
label_desc: Use image node_id 1 for calling a global function with example usage: set_up_glove(url, byt, change_etag_every) and returns: int,  headers,  str