def __init__(self, collection):

        self.source_dir = None
        AbstractIngester.__init__(self, collection=collection)
The backend is this module itself.
dataset/ETHPy150Open GeoscienceAustralia/agdc/tests/test_abstract_ingester.py/DummyIngester.__init__--crossover with--dataset/ETHPy150Open openstack/rally/rally/common/db/sqlalchemy/api.py/get_backend