public function createCommand($indexName, $clientName = null)
    {
        if (!in_array($indexName, $this->indexInformer->getAllIndexNames())) {
            $this->outputFormatted("The index <b>%s</b> is not configured in the current application", [$indexName]);
            $this->quit(1);
        }

        $client = $this->clientFactory->create($clientName);
        try {
            $index = new Index($indexName, $client);
            if ($index->exists()) {
                $this->outputFormatted("The index <b>%s</b> exists", [$indexName]);
                $this->quit(1);
            }
            $index->create();
            $this->outputFormatted("Index <b>%s</b> created with success", [$indexName]);
        } catch (Exception $exception) {
            $this->outputFormatted("Unable to create an index named: <b>%s</b>", [$indexName]);
            $this->quit(1);
        }
    }