/**
* Returns Xml representation of the collection.
*
* @param array $excludeFields Fields to exclude from the Xml output.
* @param Opus_Model_Xml_Strategy $strategy Version of Xml to process
* @return DomDocument Xml representation of the collection.
*/
public function toXml(array $excludeFields = null, $strategy = null)
{
// TODO: comment why these fields should always be excluded.
$alwaysExclude = array('Theme');
if (is_null($excludeFields) === true) {
$excludeFields = $alwaysExclude;
} else {
$excludeFields = array_merge($excludeFields, $alwaysExclude);
}
return parent::toXml($excludeFields, $strategy);
}
