Method callSync

tests/cpp/support/mock_platform_function.h:26–41

        const ::agenui::FunctionCallContext&, const std::string&)>;

    ::agenui::FunctionCallResult callSync(
        const ::agenui::FunctionCallContext& context,
        const std::string& params) override {
        {
            std::lock_guard<std::mutex> lock(mutex_);
            calls_.push_back({context, params});
        }
        ++callCount_;
        if (handler_) {
            return handler_(context, params);
        }
        ::agenui::FunctionCallResult res;
        res.status = ::agenui::FunctionCallStatus::Success;
        res.data = "{}";
        return res;
    }

    void setHandler(CallSyncHandler handler) {
        std::lock_guard<std::mutex> lock(mutex_);