anchor.diff:      )?
       ( must[objectClass] )?
       ( may[objectClass] )?
  +    // @TODO : add ( extension[type] )*
       CLOSE_PAREN
       {
           schemaElements.add( objectClass );
  
positive.code: 
  objectClassNames [ObjectClassHolder objectClass]
  {
      ArrayList list = new ArrayList();
  }
      :
      (
  
negative.code:     ;
  
  
  woidlist returns [List<String> list]
  {
      list = new ArrayList<String>( 2 );
      String oid = null;
  }
      :
  