class App : public Poco::Util::Application
{
public:
    App() = default;

protected:
    virtual void defineOptions(Poco::Util::OptionSet& options) override
    {
        setUnixOptions(true);

        // I don't know how many options a browser process has.
        // I just wanna handle "type" option, skip other options.
        options.addOption(
            Poco::Util::Option("type", "t", "Process type")
            .required(false)
            .repeatable(false)
            .argument("TYPE"));
    }
};

// app.exe --type=gpu-process --no-sandbox --lang=zh-CN --user-data-dir="C:\CEF" --gpu-preferences=UAAAAAAAAA
int main(int argc, char** argv)
{
    try
    {
        App app;
        app.init(argc, argv);
        app.run();
    }
    catch (const Poco::Util::UnknownOptionException& e)
    {
        // It will throw this exception, How can I skip unknown options ?
        std::cout << e.displayText(); // "Unknown option specified: no-sandbox"
    }
    return 0;
}