def METHOD_NAME():
    """Test that None args are handled correctly"""
    cfg1 = {"foo": 1, "bar": {"baz": 2}, "bat": [1, 2, 3]}
    cfg2 = {"foo": 11, "bar": {"buz": 22}, "bat": [5, 6, 7]}
    assert caikit.config.config.merge_configs(cfg1, None) == cfg1
    assert caikit.config.config.merge_configs(None, cfg2) == cfg2
    assert caikit.config.config.merge_configs(None, None) == {}