PortableInfobox/services/Parser/Nodes/NodeSet.php

<?php
namespace Wikia\PortableInfobox\Parser\Nodes;

use Wikia\PortableInfobox\Parser\XmlParser;

class NodeSet extends Node {

	public function getData() {
		$nodeFactory = new XmlParser( $this->infoboxData );
		if ( $this->externalParser ) {
			$nodeFactory->setExternalParser( $this->externalParser );
		}
		$data = [];
		$data['value'] = $nodeFactory->getDataFromNodes( $this->xmlNode );
		return $data;
	}

	public function isEmpty( $data ) {
		foreach ( $data['value'] as $elem ) {
			if ( $elem['type'] != 'header' && !($elem['isEmpty']) ) {
				return false;
			}
		}
		return true;
	}
}