def METHOD_NAME(self):
    ds = DataSource(str(COMMUNITY_DISTRICT_SHAPEFILE))
    layer = ds[0]
    for feature in layer:
        boro_cd = str(feature["boro_cd"])
        name = CommunityDistrict.boro_cd_to_name(boro_cd)
        instance = get_or_construct(CommunityDistrict, boro_cd=boro_cd)
        geom = feature.geom
        geom.transform(4326)
        instance.geom = to_multipolygon(geom.geos)
        instance.name = name
        print(f"Saving {instance.name}.")
        instance.save()