[Question] Application options help instead of exception

[snikulov]

Is any possible POCO way to display help on required option absence?

Currently POCO throws Poco::Util::MissedOptionException which is handled in run(int argc, char** argv) unconditionally.
Is it possible to add either callback or flag to display help() on missed required option case?

Something like

ServerApplication or Application ... run(int argc, char** argv)
{
...
     catch (Poco::Util::MissedOptionException)
     {
        // log exception as usual 
        ...
        if (_showHelp || _missedOptCallback)
        {
              // show help here...
        }
     }