Smile\ElasticsuiteCore\Index\IndexOperation::installIndex PHP Method

    public function installIndex(IndexInterface $index, $store)
    {
        if ($index->needInstall()) {
            $indexIdentifier = $index->getIdentifier();
            $indexName = $index->getName();
            $indexAlias = $this->indexSettings->getIndexAliasFromIdentifier($indexIdentifier, $store);
            $this->client->indices()->optimize(['index' => $indexName]);
            $this->client->indices()->putSettings(['index' => $indexName, 'body' => $this->indexSettings->getInstallIndexSettings()]);
            $this->proceedIndexInstall($indexName, $indexAlias);
        }
        return $index;
    }