@Override
 public int size() {
   return storage.size();
 }
 @Override
 public void clear() {
   storage.clear();
 }
 @Override
 public boolean load(int key) {
   return storage.load(key);
 }
 @Override
 public void save(int key, boolean value) {
   storage.save(key, value);
 }
 @Override
 public boolean isCalculated(int key) {
   return storage.isCalculated(key);
 }