public function getInputArgumentsSynopsis(definitions\Arguments $definitions, array $options = null)
    {
        if ($definitions->isEmpty()) {
            return '';
        }

        $items = [];

        /** @var input\Argument $argument */
        foreach ($definitions as $argument) {
            $items[] = $this->getInputArgumentSynopsis($argument, $options);
        }

        return implode(' ', $items);
    }