def METHOD_NAME(self, div_set, identifier, line):
    # just in case...
    if "geography_curie" in line and line["geography_curie"]:
        raise ValueError(
            "Found content in 'geography_curie' column, but geography_curie is a virtual model field."
        )
    seats_total = line["seats_total"]
    if not seats_total:
        seats_total = 1
    return OrganisationDivision(
        official_identifier=identifier,
        temp_id=identifier,
        name=line["Name"],
        slug=slugify(line["Name"]),
        division_type=self.get_division_type_from_registers(line),
        seats_total=seats_total,
        divisionset=div_set,
    )