def METHOD_NAME(self, class_name, report_file):
    usage_rows = self.make_usage_rows(class_name)
    with open(report_file, "w") as f:
        writer = csv.DictWriter(f, fieldnames=["slot", "from_mixs", "slot_attribute", "value"], delimiter='\t')
        writer.writeheader()
        writer.writerows(usage_rows)