def METHOD_NAME(self, s3_data_set, save_args):
    """Test setting the schema as string pyarrow schema (list of fields)
    in save arguments."""
    assert s3_data_set._save_args["schema"] == save_args["schema"]
    s3_data_set._process_schema()
    assert isinstance(s3_data_set._save_args["schema"], pa.Schema)