public function getListElement( core_kernel_classes_Class $listClass, $uri)
    {
        $returnValue = null;

        
        
        if(!empty($uri)){
	        foreach($this->getListElements($listClass, false) as $element){   	
	           	if($element->getUri() == $uri){
	           		$returnValue = $element;
	           		break;
	           	}
			}
        }
        
        

        return $returnValue;
    }