presto-elasticsearch/src/main/java/io/prestosql/elasticsearch/ElasticsearchSplitManager.java/ElasticsearchSplitManager/ElasticsearchSplitManager
class ElasticsearchSplitManager:    @Inject
    public ElasticsearchSplitManager(ElasticsearchClient client)
    {
        this.client = requireNonNull(client, "client is null");
    }