How to use the flowetl.operators.qa_check_operator.QACheckOperator function in flowetl

]
    jinja_env = dag.get_template_env()
    templates = [
        Path(tmpl)
        for tmpl in jinja_env.list_templates(
            filter_func=lambda tmpl: "qa_checks" in tmpl and tmpl.endswith(".sql")
        )
    ]
    valid_stems = (
        "qa_checks",
        *((dag.params["cdr_type"],) if "cdr_type" in dag.params else ()),
    )
    template_paths = [tmpl for tmpl in templates if tmpl.parent.stem in valid_stems]

    return [
        QACheckOperator(
            task_id=tmpl.stem
            if tmpl.parent.stem == "qa_checks"
            else f"{tmpl.stem}.{tmpl.parent.stem}",
            sql=str(tmpl),
            dag=dag,
        )
        for tmpl in sorted(template_paths)
    ]