private function sortAlphabetically(array $first, array $second)
    {
        // Replace backslashes by spaces before sorting for correct sort order
        $firstNamespace = str_replace('\\', ' ', $this->prepareNamespace($first['namespace']));
        $secondNamespace = str_replace('\\', ' ', $this->prepareNamespace($second['namespace']));

        return strcasecmp($firstNamespace, $secondNamespace);
    }