HttpClient5.0，如何在异步模式下使用gzip？

import org.apache.hc.client5.http.classic.methods.HttpGet;
import org.apache.hc.client5.http.classic.methods.HttpUriRequest;
import org.apache.hc.client5.http.impl.classic.CloseableHttpClient;
import org.apache.hc.client5.http.impl.classic.CloseableHttpResponse;
import org.apache.hc.client5.http.impl.classic.HttpClientBuilder;
import org.apache.hc.core5.http.HttpEntity;
import org.apache.hc.core5.http.io.entity.EntityUtils;
import org.apache.hc.core5.http.io.entity.InputStreamEntity;
import org.apache.hc.core5.http.io.entity.StringEntity;
import org.apache.hc.core5.http.io.support.ClassicRequestBuilder;
import org.apache.hc.core5.http.message.BasicHeader;
import org.apache.hc.core5.util.Timeout;

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.zip.GZIPInputStream;

public class HttpClientExample {
    public static void main(String[] args) throws IOException {
        // 创建HttpClient实例
        CloseableHttpClient httpClient = HttpClientBuilder.create().build();

        // 创建请求
        HttpUriRequest request = new HttpGet("http://example.com");

        // 设置请求头
        request.setHeader(new BasicHeader("Accept-Encoding", "gzip"));

        // 发送请求
        CloseableHttpResponse response = httpClient.execute(request);

        // 处理响应
        HttpEntity entity = response.getEntity();
        if (entity != null) {
            // 获取响应内容
            InputStream inputStream = entity.getContent();
            if ("gzip".equals(entity.getContentEncoding())) {
                // 解压缩响应内容
                inputStream = new GZIPInputStream(inputStream);
            }

            // 读取响应内容
            ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
            byte[] buffer = new byte[1024];
            int len;
            while ((len = inputStream.read(buffer)) != -1) {
                outputStream.write(buffer, 0, len);
            }
            String responseContent = outputStream.toString();

            // 打印响应内容
            System.out.println(responseContent);

            // 关闭流
            inputStream.close();
            outputStream.close();
        }

        // 关闭响应
        response.close();

        // 关闭HttpClient
        httpClient.close();
    }
}