if ( SchemaConstants.EXTENSIBLE_OBJECT_OC.equalsIgnoreCase( objectClassName ) )
{
hasExtensibleObject = true;
}
ObjectClass oc = registry.lookup( objectClassName );
// Add all unseen objectClasses to the list, except 'top'
if ( !ocSeen.contains( oc.getOid() ) )
{
ocSeen.add( oc.getOid() );