code: def _restore_meta(self):
          
          restore_meta_file = self._get_restore_meta_file()
          filename = self.flags['RESTORE_DIRECTORY'] + self._get_restore_meta_file()
          new_saver = tf.train.import_meta_graph(filename)
          new_saver.restore(self.sess, filename[:-5])
          print("Model restored from %s" % restore_meta_file)
docs: Restore from meta file. 'RESTORE_META_FILE' is expected to have .meta at the end.