def METHOD_NAME():
    ren, passes = make_passes()
    assert not passes._passes
    ssaa_pass = passes.enable_ssaa_pass()
    assert isinstance(ssaa_pass, _vtk.vtkSSAAPass)
    assert list(passes._passes.keys()).count('vtkSSAAPass') == 1
    # enabling again should not add the pass again
    ssaa_pass = passes.enable_ssaa_pass()
    assert list(passes._passes.keys()).count('vtkSSAAPass') == 1
    passes.disable_ssaa_pass()
    assert not passes._passes
    # disabling again should just do nothing
    passes.disable_ssaa_pass()
    assert not passes._passes