def save(self, path=None):
        """
        Save the Ludwig model.

        :param path: the path to save to
        :return:
        """
        if not path:
            print('WARNING: Ludwig nlu model not saved (no path provided).')
        else:
            self.model.save(path)

        Save the Ludwig model.

        :param path: the path to save to
        :return:
        
plato/agent/component/nlu/ludwig_nlu.py