def METHOD_NAME(self):
    uri = data_file_path('bboxes.geojson')
    class_config = ClassConfig(names=['1', '2'])
    crs_transformer = IdentityCRSTransformer()
    ls = ChipClassificationGeoJSONStore(
        uri,
        class_config=class_config,
        crs_transformer=crs_transformer,
    )
    labels = ls.get_labels()
    with get_tmp_dir() as tmp_dir:
        save_uri = join(tmp_dir, 'labels.geojson')
        labels.save(save_uri, class_config, crs_transformer)
        self.assertTrue(file_exists(save_uri))