/**
* returns current active language id
* @return mixed
*/
function execute()
{
$existLanguage = $this->fetchExistLanguage();
if ($existLanguage !== $this->context->getLang()) {
$this->context->setLang($existLanguage);
$theme = $this->context->getTheme();
if (!empty($theme)) {
$this->session->setValue('CURRENT_THEME', $theme);
}
}
return $this->context->getLang();
}
