code: def GetParentFileEntry(self):
      
      store_index = vshadow.VShadowPathSpecGetStoreIndex(self.path_spec)
      if store_index is None:
        return None
  
      return self._file_system.GetRootFileEntry()
docs: Retrieves the parent file entry.
  
      Returns:
        FileEntry: parent file entry or None if not available.