UrlManager::create

public function create($action, $params = [], $absolute = false)
{
	$uri = $this->getEndPoint($absolute);
	$uri->addParams([
		'action' => $action,
	]);

	if (defined('SITE_ID') && !Context::getCurrent()->getRequest()->isAdminSection())
	{
		$uri->addParams([
			'SITE_ID' => SITE_ID,
		]);
	}

	$uri->addParams($params);

	return $uri;
}