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

    public function createIndex($indexIdentifier, $store)
    {
        $index = $this->initIndex($indexIdentifier, $store, false);
        $indexSettings = ['settings' => $this->indexSettings->getCreateIndexSettings()];
        $indexSettings['settings']['analysis'] = $this->indexSettings->getAnalysisSettings($store);
        foreach ($index->getTypes() as $currentType) {
            $indexSettings['mappings'][$currentType->getName()] = $currentType->getMapping()->asArray();
        }
        $this->client->indices()->create(['index' => $index->getName(), 'body' => $indexSettings]);
        return $index;
    }