assertEquals(false, sm.inverseBidiMap().containsKey(fromKeyValue));
assertEquals(false, sm.inverseBidiMap().containsValue(fromKey));
assertEquals(false, sub.containsKey(fromKey));
assertEquals(false, sub.containsValue(fromKeyValue));
assertEquals(false, sm.containsKey(second));
assertEquals(false, sm.containsValue(secondValue));
assertEquals(false, sm.inverseBidiMap().containsKey(secondValue));
assertEquals(false, sm.inverseBidiMap().containsValue(second));
assertEquals(false, sub.containsKey(second));
assertEquals(false, sub.containsValue(secondValue));