@Test
public void invokeListsAllDuplicates() {

    final Object[] params = new Object[]{Arrays.asList(10, 8, 3), Arrays.asList(10, 8, 3), Arrays.asList(3, 10, 8)};
    FunctionTestUtil.assertResultList(unionFunction.invoke(params), Arrays.asList(10, 8, 3));
}