Jarves\Jarves::getSystemConfig PHP Method

    public function getSystemConfig()
    {
        return $this->jarvesConfig->getSystemConfig();
    }

 /**
  * Check whether specified pLang is a valid language
  *
  * @param string $lang
  *
  * @return bool
  */
 public function isValidLanguage($lang)
 {
     if (!$this->jarves->getSystemConfig()->getLanguages() && $lang == 'en') {
         return true;
     }
     //default
     if ($this->jarves->getSystemConfig()->getLanguages()) {
         $languages = explode(',', preg_replace('/[^a-zA-Z0-9]/', '', $this->jarves->getSystemConfig()->getLanguages()));
         return array_search($lang, $languages) !== true;
     } else {
         return $lang == 'en';
     }
 }