def METHOD_NAME(self, line):
    if line["Start Date"]:
        return Organisation.objects.all().get_by_date(
            organisation_type="local-authority",
            official_identifier=line["Organisation ID"],
            date=datetime.datetime.strptime(
                line["Start Date"], "%Y-%m-%d"
            ).date(),
        )
    # If we haven't got a start date for the divisionset, see if we can
    # work out the org without needing one (mostly we can).
    # If we throw an exception here, we will need to call this again
    # with a start date on this divisionset
    return Organisation.objects.get(
        organisation_type="local-authority",
        official_identifier=line["Organisation ID"],
    )