public void removeRepeatingExtension(Extension ext){
  List<Extension> extList=repeatingExtensionMap.get(ext.getClass());
  if (extList == null) {
    return;
  }
  extList.remove(ext);
}

public void removeRepeatingExtension ( Extension ext ) { List < Extension > extList = repeatingExtensionMap . get ( ext . getClass ( ) ) ; if ( extList == null ) { return ; } extList . remove ( ext ) ; }
removes a repeating extension object .
