PhpBrew\Patches\GistContent::__toString PHP Method

    public function __toString()
    {
        $url = "https://gist.githubusercontent.com/{$this->userId}/{$this->gistId}/raw";
        if ($this->revision) {
            $url .= "/{$this->revision}";
        }
        if ($this->filename) {
            $url .= "/{$this->filename}";
        }
        return $url;
    }