def METHOD_NAME(pSpill, py_current):
    py_current.prepare_for_model_run()
    py_current.prepare_for_model_step(pSpill, time_step, model_time)
    delta = py_current.get_move(pSpill, time_step, model_time)
    py_current.model_step_is_done(pSpill)
    return delta