Prado\I18N\core\CultureInfo::getInvariantCulture PHP Method

    static function getInvariantCulture()
    {
        static $invariant;
        if ($invariant === null) {
            $invariant = new CultureInfo();
        }
        return $invariant;
    }

 function setUp()
 {
     $this->culture = CultureInfo::getInvariantCulture();
 }