Kelunik\AcmeClient\Stores\ChallengeStore::doDelete PHP Method

    private function doDelete($token)
    {
        Assert::string($token, "Token must be a string. Got: %s");
        $path = $this->docroot . "/.well-known/acme-challenge/{$token}";
        $realpath = realpath($path);
        if ($realpath) {
            (yield \Amp\File\unlink($realpath));
        }
    }