def METHOD_NAME(self):
    config = DictConfig(
        {
            'cls': 'nemo.collections.asr.modules.SpectrogramAugmentation',
            'params': {'rect_freq': 50, 'rect_masks': 5, 'rect_time': 120,},
        }
    )
    obj = Serialization.from_config_dict(config=config)
    new_config = obj.to_config_dict()
    assert config != new_config
    assert 'params' not in new_config
    assert 'cls' not in new_config
    assert '_target_' in new_config