如何让HttpClient使用应用池标识

import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClientBuilder;
import org.apache.http.impl.conn.PoolingHttpClientConnectionManager;

public class HttpClientExample {
    public static void main(String[] args) {
        // 创建连接池管理器
        PoolingHttpClientConnectionManager connectionManager = new PoolingHttpClientConnectionManager();
        
        // 设置最大连接数和每个路由的最大连接数
        connectionManager.setMaxTotal(100);
        connectionManager.setDefaultMaxPerRoute(10);
        
        // 设置应用池标识
        connectionManager.setApplicationPoolIdentity("myAppPool");
        
        // 创建HttpClientBuilder对象
        HttpClientBuilder builder = HttpClientBuilder.create();
        
        // 设置连接池管理器
        builder.setConnectionManager(connectionManager);
        
        // 创建HttpClient实例
        CloseableHttpClient httpClient = builder.build();
        
        // 使用HttpClient发送请求
        // ...
    }
}