/**
  * Language constructor.
  * @since 1.0.0
  *
  * @param null $language_code
  *
  * @throws InvalidParamException
  */
 public function __construct($language_code = null)
 {
     if ($language_code === null) {
         $this->values = LanguageHelper::getData(Yii::$app->language);
     } else {
         $this->values = LanguageHelper::getData($language_code);
     }
 }