public function askForArray(OutputInterface $output, $question, $default)
    {
        $result = $this->ask($output, $question, $default);
        if (is_string($result)) {
            $result = explode(',', $result);
        }
        if (!is_array($result)) {
            $result = array();
        }
        $result = array_map('trim', $result);

        return $result;
    }