如何在grpc方法中添加监听器？

#include <iostream>
#include <grpcpp/grpcpp.h>

using grpc::Server;
using grpc::ServerBuilder;
using grpc::ServerContext;
using grpc::Status;

// 定义服务接口
class MyService final : public MyService::Service {
    // 实现服务接口中的方法
    Status MyMethod(ServerContext* context, const MyRequest* request, MyResponse* response) override {
        // 方法实现逻辑
        // ...
        return Status::OK;
    }
};

// 监听器函数
grpc::Status MyListener(grpc::ServerContext* context, const grpc::internal::RpcMethod::RpcHandler& handler, grpc::CompletionQueue* cq, grpc::ServerCompletionQueue* notification_cq, void* tag);

int main() {
    std::string server_address("0.0.0.0:50051");

    // 创建Server对象
    ServerBuilder builder;
    builder.AddListeningPort(server_address, grpc::InsecureServerCredentials());

    // 创建服务实现类对象
    MyService service;

    // 添加监听器到方法上
    builder.RegisterService(&service);
    builder.RegisterMethod("/my.package.MyService/MyMethod", grpc::experimental::ServerInterceptor(MyListener));

    // 构建Server对象
    std::unique_ptr<Server> server(builder.BuildAndStart());

    std::cout << "Server listening on " << server_address << std::endl;

    // 启动Server
    server->Wait();

    return 0;
}

// 监听器函数实现
grpc::Status MyListener(grpc::ServerContext* context, const grpc::internal::RpcMethod::RpcHandler& handler, grpc::CompletionQueue* cq, grpc::ServerCompletionQueue* notification_cq, void* tag) {
    // 监听器逻辑
    // ...

    // 调用原始的方法处理函数
    return handler(context, cq, notification_cq, tag);
}