code: private void onCacheEntryUpdated(ItemData data)
     {
        if (data == null || data instanceof NullItemData)
        {
           return;
        }
        for (WorkspaceStorageCacheListener listener : listeners)
        {
           try
           {
              listener.onCacheEntryUpdated(data);
           }
           catch (RuntimeException e) //NOSONAR
           {
              LOG.warn("The method onCacheEntryUpdated fails for the listener " + listener.getClass(), e);
           }
        }
     }
docs: Called when a cache entry corresponding to the given node has item updated
  @param data the item corresponding to the updated cache entry