protected function getMetaDataValue(array $metaData, $property)
    {
	    $property = ltrim($property, '_');
        $value = null;
        foreach ($metaData as $metaItem) {
        	$key = ltrim($metaItem->key, '_');
            if ($property === $key) {
                $value = $metaItem->value;
                break;
            }
        }
        return $value;
    }