Post :meth:`dtoolcore.ProtoDataSet.freeze` cleanup actions.

        This method is called at the end of the
        :meth:`dtoolcore.ProtoDataSet.freeze` method.

def post_freeze_hook(self):
        """Post :meth:`dtoolcore.ProtoDataSet.freeze` cleanup actions.

        This method is called at the end of the
        :meth:`dtoolcore.ProtoDataSet.freeze` method.
        """
        self._use_cache = False
        self._ls_abspath_cache = {}
        self._metadata_cache = {}
        self._size_and_timestamp_cache = {}
        _rm_if_exists(self._metadata_fragments_abspath)