ReferenceChangeTracker { public void clear() { uuidMap.clear(); references.clear(); }  String get(String oldUUID); void put(String oldUUID, String newUUID); void clear(); void processedReference(Object refProp); Iterator<Object> getProcessedReferences(); boolean removeReferences(List<Object> processedReferences);  }
@Test public void testClear() { rct.put("old", "new"); rct.clear(); assertNull(rct.get("old")); }