end_datetime: datetime = Body(),
    process_after: timedelta = Body(),
    repeat_at: Union[time, None] = Body(default=None),
):
    start_process = start_datetime + process_after
    duration = end_datetime - start_process
    return {
        "item_id": item_id,
        "start_datetime": start_datetime,
        "end_datetime": end_datetime,
        "process_after": process_after,
        "repeat_at": repeat_at,

                            },
                            "process_after": {
                                "title": "Process After",
                                "type": "string",
                                "format": "duration",
                            },
                        },
                        "required": ["start_datetime", "end_datetime", "process_after"],
                    },