#include <cstring>
#include <expected>
#include <iostream>
#include <span>
#include <string>
#include <vector>

#include <google/protobuf/message.h>

using pbMessage = google::protobuf::Message;
using pbMessagePtr = std::unique_ptr<pbMessage>;

class RPCClient {
public:
        std::expected<void, std::string> Transaction(const pbMessage& req, pbMessage& res);
};