def METHOD_NAME() -> None:
    def _assert_empty(info: _EDFInfo) -> None:
        assert info.lines == []
        np.testing.assert_array_equal(info.x_values, np.array([]))
    edf_info = _get_edf_info([])
    _assert_empty(edf_info)
    study = create_study()
    edf_info = _get_edf_info(study)
    _assert_empty(edf_info)
    trial = study.ask()
    study.tell(trial, state=optuna.trial.TrialState.PRUNED)
    edf_info = _get_edf_info(study)
    _assert_empty(edf_info)