def target_urls(self, year=None):
        return [item['raw_url'] for item in self.mappings(year)]
Write your forwards methods here.
dataset/ETHPy150Open openelections/openelections-core/openelex/us/sc/datasource.py/Datasource.target_urls--crossover with--dataset/ETHPy150Open hackerspacesg/hackdo/hado/migrations/0011_end_date_valid.py/Migration.forwards