Kodeine\Metable\Metable::getMetaString PHP Method

    protected function getMetaString($key, $raw = false)
    {
        $meta = $this->metaData->get($key, null);
        if (is_null($meta) || $meta->isMarkedForDeletion()) {
            return null;
        }
        return $raw ? $meta : $meta->value;
    }