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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def _restore_meta(self):
 """ Restore from meta file. 'RESTORE_META_FILE' is expected to have .meta at the end. """

        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)