/**
* Add a relatedItem element.
*
* Checks the $text to see if it looks like a URL, and creates a
* location subelement if so. Otherwise, a titleInfo is used.
*
* @param DomElement $mods
* @param string $text
* @param bool $original
*/
private function _addRelatedItem($mods, $text, $original = false)
{
$relatedItem = $mods->appendNewElement('relatedItem');
if ($this->_isUrl($text)) {
$titleInfo = $relatedItem->appendNewElement('titleInfo');
$titleInfo->appendNewElement('title', $text);
} else {
$location = $relatedItem->appendNewElement('location');
$location->appendNewElement('url', $text);
}
if ($original) {
$relatedItem->setAttribute('type', 'original');
}
}