function WOrderedRepeatableComponentCollection()
 {
     parent::WRepeatableComponentCollection();
     $idManager = Services::getService("Id");
     $this->_orderedSet = new OrderedSet($idManager->getId("unimportant"));
     $this->_nextId = 0;
 }
 function WAddFromListRepeatableComponentCollection()
 {
     parent::WRepeatableComponentCollection();
     $this->_addButton = WChooseOptionButton::withLabel($this->_addLabel);
     $this->_addButton->setParent($this);
 }