xpdo помогите написать простейший сниппет

$criteria = $modx->newQuery('modResource', array(
	'published' => '1'
	,'deleted' => '0'
	,'parent' => '0'
        ,'context_key' => 'web'
	,'class_key' => 'modDocument'
	
));

$staticResources = $modx->getCollection('modResource', $criteria);  

foreach ($staticResources as $staticResource) {
   	$s = $s . $staticResource->get('id')."<br>";  
        $relTVs = $staticResource->getMany('modTemplateVar');
	foreach ($relTVs as $relTV){
		$s = $s . " TV: " . $relTV->get('name') . "<br>Value: " . $relTV->getValue() . "<br><br>";	
	}  
   	$s = $s . $staticResource->get('pagetitle');  
}
return $s;