def METHOD_NAME(self):
    """
    Check the shape of different DAGs
    """
    pipeline_data = {"schedule_interval": None}
    self.assertEquals(get_schedule_interval(pipeline_data), None)
    pipeline_data = {"schedule_interval": {"__var": 86400.0, "__type": "timedelta"}}
    self.assertEquals(get_schedule_interval(pipeline_data), "1 day, 0:00:00")
    pipeline_data = {
        "timetable": {
            "__type": "airflow.timetables.simple.OnceTimetable",
            "__var": {},
        }
    }
    self.assertEquals(get_schedule_interval(pipeline_data), "@once")
    pipeline_data = {
        "timetable": {
            "__type": "airflow.timetables.interval.CronDataIntervalTimetable",
            "__var": {"expression": "*/2 * * * *", "timezone": "UTC"},
        }
    }
    self.assertEquals(get_schedule_interval(pipeline_data), "*/2 * * * *")