def METHOD_NAME(self) -> None:
    assert bus.nice_join(["one"]) == "one"
    assert bus.nice_join(["one", "two"]) == "one or two"
    assert bus.nice_join(["one", "two", "three"]) == "one, two or three"
    assert bus.nice_join(["one", "two", "three", "four"]) == "one, two, three or four"