public function save()
    {
        if (true == file_exists($this->getFileName())) {
            unlink($this->getFileName());
        }
        touch($this->getFileName());
        $content = "";
        foreach ($this->getEnvironments() as $environment) {
            $content .= "{$environment}\n";
        }
        file_put_contents($this->getFileName(), $content);
        return $content;
    }