PortableInfobox/services/Parser/Nodes/NodeFooter.php

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

class NodeFooter extends Node {

	public function getData() {
		return [ 'value' => $this->getExternalParser()->parseRecursive( $this->getInnerXML( $this->xmlNode ) ) ];
	}

	public function isEmpty( $data ) {
		$links = trim( $data[ 'value' ] );
		return empty( $links );
	}
}