如何使用cloudhopper异步发送deliverSmResp

<dependency>
    <groupId>com.cloudhopper</groupId>
    <artifactId>ch-smpp</artifactId>
    <version>5.0.0</version>
</dependency>

SmppSessionConfiguration config = new SmppSessionConfiguration();
config.setHost("smpp.example.com");
config.setPort(2775);
config.setSystemId("your_username");
config.setPassword("your_password");

SmppSession session = new DefaultSmppClient().bind(config, new MySmppSessionHandler());

public class MySmppSessionHandler implements SmppSessionHandler {
    @Override
    public void sessionCreated(Long sessionId, SmppSession session, BaseBindResp preparedBindResponse) {
        // SMPP会话创建时的处理逻辑
    }

    @Override
    public void sessionDestroyed(Long sessionId, SmppSession session) {
        // SMPP会话销毁时的处理逻辑
    }

    @Override
    public PduResponse firePduRequestReceived(PduRequest pduRequest) {
        // 处理接收到的PDU请求
        if (pduRequest instanceof DeliverSm) {
            // 异步发送deliverSmResp
            DeliverSm deliverSm = (DeliverSm) pduRequest;
            DeliverSmResp deliverSmResp = deliverSm.createResponse();
            session.sendResponsePdu(deliverSmResp);
        }
        return null;
    }

    // 其他接口方法的实现...
}