def METHOD_NAME(self):
    content = self.client.select_object_content(
        Bucket=self.bucket_name,
        Key="extensive.json",
        Expression="select * from s3object[*].staff[*] s",
        ExpressionType="SQL",
        InputSerialization={"JSON": {"Type": "DOCUMENT"}},
        OutputSerialization={"JSON": {"RecordDelimiter": ","}},
    )
    result = list(content["Payload"])
    assert {"Records": {"Payload": b"{},"}} in result