Noherczeg\Breadcrumb\Breadcrumb::setBaseURL PHP Метод

    public function setBaseURL($urlString)
    {
        if (!is_string($urlString) && !is_null($urlString)) {
            throw new InvalidArgumentException("Please provide a string as parameter!");
        } else {
            $this->base_url = $urlString;
        }
        return $this;
    }