### Question:
PersistentObjectHolder extends RelationshipFault<E> implements ValueHolder<E> { public void invalidate() { fault = true; value = null; } @SuppressWarnings("unused") private  PersistentObjectHolder();  PersistentObjectHolder(Persistent relationshipOwner, String relationshipName); boolean isFault(); void invalidate(); E getValue(); E getValueDirectly(); synchronized E setValue(E value); E setValueDirectly(E value);  }### Answer:
@Test public void testInvalidate() { ObjectContext context = mock(ObjectContext.class); ClientMtTable2 o = new ClientMtTable2(); o.setPersistenceState(PersistenceState.COMMITTED); o.setObjectContext(context); PersistentObjectHolder holder = new PersistentObjectHolder(o, ClientMtTable2.TABLE1.getName()); assertTrue(holder.isFault()); ClientMtTable1 o1 = new ClientMtTable1(); o1.setObjectContext(context); holder.setValueDirectly(o1); holder.invalidate(); assertTrue(holder.isFault()); assertNull(holder.value); }