def METHOD_NAME(self, data_list, data_with_config, defaults):
    sparsifier = DataNormSparsifier(data_list, **defaults)
    for data_config_dict in data_with_config:
        name, data, config = data_config_dict['name'], data_config_dict['data'], data_config_dict['config']
        sparsifier.add_data(name=name, data=data, **config)
    return sparsifier