code: public void onCacheEntryUpdated(ItemData data)
     {
        if (data instanceof NodeData)
        {
           NodeData node = (NodeData)data;
           AccessControlList acl = node.getACL();
           if (acl == null)
           {
              return;
           }
           if (acl.hasOwner() && filterOwner != null)
           {
              filterOwner.add(node.getIdentifier());
           }
           if (acl.hasPermissions() && filterPermissions != null)
           {
              filterPermissions.add(node.getIdentifier());
           }
        }
     }
docs: {@inheritDoc}