presto-elasticsearch/src/main/java/io/prestosql/elasticsearch/ElasticsearchConfig.java/ElasticsearchConfig/setScrollSize
class ElasticsearchConfig:    @Config("elasticsearch.scroll-size")
    @ConfigDescription("Scroll batch size")
    public ElasticsearchConfig setScrollSize(int scrollSize)
    {
        this.scrollSize = scrollSize;
        return this;
    }