elasticsearch 1.5.2版本迁移到5.4.0版本 java客户端优化索引代码该如何写？

import org.elasticsearch.ElasticsearchException;

import org.elasticsearch.action.ActionFuture;

import org.elasticsearch.action.admin.indices.optimize.OptimizeRequest;

import org.elasticsearch.action.admin.indices.optimize.OptimizeResponse;

import org.elasticsearch.client.Client;





public class ESOptimizeService {



	private String[] indices;

	

	public ESOptimizeService(String[] indices) {

		this.indices = indices;

	}



	public boolean optimize() {

		Client client = ESClient.getClient();

		try {

			OptimizeRequest request = new OptimizeRequest(this.indices).maxNumSegments(1);

			ActionFuture<OptimizeResponse> actionFuture = client.admin().indices().optimize(request);

			

			client.admin().indices().optimize(request);

			

			actionFuture.actionGet();

			return actionFuture.isDone();

		} catch (ElasticsearchException e) {

			throw new ESException(e.getMessage(), e);

		}

	}



}