def METHOD_NAME(self, *args, **options):
    input_file: Path = options["input"]
    logger.info("Loading the data")
    with input_file.open() as fp:
        json_data = json.load(fp)
        if json_data["format_version"] != format_version:
            raise CommandError(
                f"This version of {settings.PRODUCT_NAME} can only import json"
                f" format version {format_version}, but the json file you provided"
                f" is version {json_data['format_version']}"
            )
        ris_data: RisData = converter.structure(json_data, RisData)
    body = models.Body.objects.filter(name=ris_data.meta.name).first()
    if not body:
        logger.info("Building the body")
        if options["ags"] or ris_data.meta.ags:
            ags = options["ags"] or ris_data.meta.ags
        else:
            ags = city_to_ags(ris_data.meta.name, False)
            if not ags:
                raise RuntimeError(
                    "Failed to determine the Amtliche Gemeindeschlüssel for"
                    f" '{ris_data.meta.name}'. Please look it up yourself and"
                    " specify it with `--ags`"
                )
            logger.info(f"The Amtliche Gemeindeschlüssel is {ags}")
        body = models.Body(
            name=ris_data.meta.name, short_name=ris_data.meta.name, ags=ags
        )
        body.save()
        if not options["skip_body_extra"]:
            import_outline(body)
            import_streets(body)
    else:
        logging.info("Using existing body")
    # TODO: Re-enable this after some more thorough testing
    # handle_counts(ris_data, options["allow_shrinkage"])
    import_data(body, ris_data)
    fix_sort_date(datetime.datetime.now(tz=tz.tzlocal()))
    if not options["skip_download"]:
        Importer(BaseLoader(dict()), force_singlethread=True).load_files(
            fallback_city=settings.GEOEXTRACT_SEARCH_CITY or body.short_name
        )
    if not options["no_notify_users"]:
        logger.info("Sending notifications")
        NotifyUsers().notify_all()