UrlManager::getUrlToShowFileByService

static function getUrlToShowFileByService($fileId, $service, array $params = array())
{
	return static::getUrlDocumentController('', array_merge(array(
		'document_action' => 'show',
		'primaryAction' => 'show',
		'objectId' => (int)$fileId,
		'service' => $service,
	), $params));
}