public function getStaticTokens()
    {
        $tokens = [];
        $sites = [];
        if (!$this->getValid()) {
            return $sites;
        }
        foreach ($this->xml->children() as $child) {
            if ($child->getName() == "token") {
                $token = $this->parseToken($child);
                if ($token !== false) {
                    $tokens[$token['token']] = $token;
                }
            }
        }
        return $tokens;
    }