def METHOD_NAME(cls) -> None:
    """
    For testing purposes, slightly alter the RucioFrontend such that
     we can run tests outside of dali too
    """
    # Some non-existing keys that we will try finding in the test cases.
    cls.test_keys = [
        strax.DataKey(run_id=run_id,
                      data_type='dtype',
                      lineage={'dtype': ['Plugin', '0.0.0.', {}], }
                      )
        for run_id in ('-1', '-2')
    ]