private function getBundlePackageName(string $className): string
    {
        if ('Bundle' === substr($className, -6)) {
            $className = substr($className, 0, -6);
        }

        return Container::underscore($className);
    }
private function getBundlePackageName(string $className): string
    {
        if ('Bundle' === substr($className, -6)) {
            $className = substr($className, 0, -6);
        }

        return Container::underscore($className);
    }
Returns a bundle package name emulating what a bundle extension would look like.