code: def GetRootFileEntry(self):
      
      path_spec = tsk_partition_path_spec.TSKPartitionPathSpec(
          location=self.LOCATION_ROOT, parent=self._path_spec.parent)
      return self.GetFileEntryByPathSpec(path_spec)
docs: Retrieves the root file entry.
  
      Returns:
        TSKPartitionFileEntry: a file entry or None of not available.