public function setDefaultTranslateLanguage($languageSlug = '')
    {
        if(!$languageSlug) {
            $languageSlug = App::getLocale();
        }
        $this->_defaultTranslateLanguage = $languageSlug;
        return $this;
    }
public function setDefaultTranslateLanguage($languageSlug = '')
    {
        if(!$languageSlug) {
            $languageSlug = App::getLocale();
        }
        $this->_defaultTranslateLanguage = $languageSlug;
        return $this;
    }
public function setDefaultTranslateLanguage ( $ languageSlug = '' ) { if ( ! $ languageSlug ) { $ languageSlug = App :: getLocale ( ) ; } $ this -> _defaultTranslateLanguage = $ languageSlug ; return $ this ; }
Set default language.

@param  string $languageSlug
@return $this
Set default language .