protected function putDataHeldByAggregator(Aggregator $a, DOMElement $destination)
 {
     $destination->appendChild($this->getDOMNodeOf($a->getAggregatorOfNodes(), $destination));
 }
 protected function convertToScalarImpl(Aggregator $aggregator)
 {
     /* @var $aggregator HierarchicalAggregator  */
     return $this->nodePresenter->convertToScalar($aggregator->getAggregatorOfNodes());
 }
 protected function putDataHeldByAggregator(Aggregator $a, DOMElement $destination)
 {
     /* @var $a HierarchicalAggregator */
     $this->addHierarchyNodeTags($a->getAggregatorOfNodes(), $destination, self::ROOT_NODE_LEVEL, self::ROOT_NODE_PARENT_LABEL);
 }