def METHOD_NAME(self):
    vocs = deepcopy(TEST_VOCS_BASE)
    assert vocs.output_names == ["y1", "c1"]
    vocs.objectives = {"y1": "MAXIMIZE", "d1": "MINIMIZE"}
    vocs.observables = ["y1", "c1"]
    assert vocs.output_names == ["d1", "y1", "c1"]
    assert vocs.n_outputs == 3