code: def get_fixtures_file_hash(all_fixture_paths: Iterable[str]) -> str:
      
      hasher = hashlib.md5()
      for fixture_path in sorted(all_fixture_paths):
          with open(fixture_path, 'rb') as fixture_file:
              hasher.update(fixture_file.read())
      return hasher.hexdigest()
docs: Returns the MD5 hash of the fixture files.  Used for cache busting.