*/
protected String openElements(DefaultConfigurationKey keyLast, DefaultConfigurationKey keyAct,
Configuration config, Set<String> keySet)
{
DefaultConfigurationKey.KeyIterator it = keyLast.differenceKey(keyAct).iterator();
DefaultConfigurationKey k = keyLast.commonKey(keyAct);
for (it.nextKey(); it.hasNext(); it.nextKey())
{
k.append(it.currentKey(true));
elementStart(it.currentKey(true), config.getProperty(k.toString()));
keySet.add(k.toString());
}
return it.currentKey(true);
}