Codeception\Module\WPDb::useBlog PHP Method

    public function useBlog($id = 0)
    {
        if (!(is_numeric($id) && intval($id) === $id && intval($id) >= 0)) {
            throw new \InvalidArgumentException('Id must be an integer greater than or equal to 0');
        }
        $this->blogId = intval($id);
    }