code: def FileEntryExistsByPathSpec(self, path_spec):
      
      location = getattr(path_spec, 'location', None)
      if location is None or not location.startswith(self.LOCATION_ROOT):
        return False
  
      if len(location) == 1:
        return True
  
      return self._cpio_archive_file.FileEntryExistsByPath(location[1:])
docs: Determines if a file entry for a path specification exists.
  
      Args:
        path_spec (PathSpec): a path specification.
  
      Returns:
        bool: True if the file entry exists.