def METHOD_NAME():
    bio_deg = Biodegradation(waves)
    (sc, time_step) = weathering_data_arrays(bio_deg.array_types,
                                             water)[:2]
    assert 'bio_degradation' not in sc.mass_balance
    bio_deg.prepare_for_model_run(sc)
    assert 'bio_degradation' in sc.mass_balance